98 Answered Questions for the topic radius

03/27/16

How would I find the radius of a circle knowing its radian measure and area of the sector?
Q: An arc on a circle subtends a central angle of θ=4 radians, and the area of the sector is 128 cm2. Determine the radius, r centimeters, of the circle.   I know the formula is A= .5 x theta x... more
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03/19/16

A full circle inside a rectangle
A circle with a 5 foot radius is place inside a 30x20 ft. rectangle. How many square feet of the rectangle remains after the circle is placed inside the rectangl?
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03/17/16

What is the minimum speed required at the top of the track to ensure that the coaster does not leave the track?
1. A roller coaster has a mass of 500 kg and a radius of 9 m. What is the minimum speed required at the top of the track to ensure that the coaster does not leave the track?   a) 8.7 m/s b) 9.5... more
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03/16/16

PHYSICS: Minimum Velocity
What is the minimum velocity required of a roller coaster at the top of a vertical loop with a radius of 7 m?   SHOW ALL WORK PLEASE. May use if needed: Fc = Fn + Fg Fc = MAc Ac = v^2/r
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03/15/16

Force and Acceleration
A coaster has a mass of 800 kg and a radius of 5m. What is the minimum speed required at the top of the track to ensure that the coaster does not leave the track?May use:Fc = Fn +FgFc = MAcAc = v^2... more
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Radius

03/15/16

What is the radius of the cone?
A cylinder and a cone have the same height and the same volume. The radius of a cylinder is 9 centimeters. What is the radius of the cone?
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03/11/16

Pi Problem
A standard men's basketball is 30 inches in circumference. A standard women's basketball is 28.5 inches in circumference. This is only a 1.5 inch difference. What is their difference in... more
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03/11/16

Pi Problem
A standard running track is approximately a quarter mile or 400 meters in length around the inner lane. It consists of two straight away strips and two semi-circle arcs. If each straight away is... more
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03/07/16

Solving for Centripetal Force using a Free Body Diagram
A 70 kg student is riding a roller coaster and is at the top of the vertical loop. The loop has a radius of 16 m, and the car's velocity at the top is 12 m/s. What is the student's apparent weight... more
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03/07/16

Solving centripetal force using an equation
A roller coaster car of mass of 300 kg is going through a loop at a velocity of 15 m/s. If the loop has a radius of 12 m, what centripetal force is the roller coaster experiencing?   SHOW WORK
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02/25/16

What am I doing wrong in this problem?
The County Fair Swing carries the mass of riders and chairs in a circular path in a horizontal plane while suspended by cables or chains. Let's assume that:Each chair with riders is supported by a... more
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Radius

02/17/16

What is the radius of a circle with a circumference of 37.7 m?
the formula for the circumference of a circle is C=2 pie r, where r is the radius of the circle. What is the radius of a circle with a circumference of 37.7 m? Round to the nearest tenth if necessary. more
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02/15/16

equation of the circle
Put the equation of the circle in standard form, identify the center (h,k) radius r of the circle. x2+y2-2x-12y+28=0
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Radius

01/19/16

Using the approximation 3.14 for p, what is the radius of a circle with a circumference of 53.4?
Hey, this is for my Algebra spiral. I just need to find the radius of a circle using this word problem, but I can't find the answer. Thanks!
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11/19/15

Finding the radius of a circle
What is the radius of a circle in which an angle of 3 radians cuts off an arc length of 30cm?
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11/19/15

What is the radius of a circle in which an angle of 3 radians cuts off an arc length of 30 cm?
What is the radius of a circle in which an angle of 3 radians cuts off an arc length of 30 cm?
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11/19/15

Angles, Circles, Radians, Trig, Calc
Convert the following angles, assuming the radius of the circle is 1:a.) Convert 120? to radiansb.) Convert 2 radians to degrees
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10/29/15

Finding coordinates using circles
Find the coordinates of the point at the given angle on a circle of radius 4.2 centered at the origin (a) −540? (b) 135?
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10/28/15

How long is the arc subtended by an angle of 4p/3 radians on a circle of radius 15cm?
How long is the arc subtended by an angle of 4π/3 radians on a circle of radius 15cm?
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08/05/15

Question about a Circle, help please?
In circle O, CD = 44, OM = 20, ON = 19, CD is perpendicular to OM, EF is perpendicular to ON , (The figure is not drawn to scale.) Show your work. a. Find the radius. If your answer is not an... more
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07/19/15

weird geometry question
 The sets of points created by the midpoints of all chords of length 4 cm in a circle of radius 8 is a    A)point B)line segment C)line D)semicircle E)circle   I have absolutely no idea how... more
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07/15/15

what is the radius of a circle with equation x^2+y^2-7=9
I have no idea how to do it  
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Radius Algebra 2

06/29/15

a citcular above ground pool has a height of 52 in. and a volume of 1100ft.^3 what is the radius of the pool to the nearest tenth of a foot?
i need to know what the radius to the nearest tenth is
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06/18/15

Physics: What is the tangential velocity, and how many revolutions?
The new blade on my table saw has a radius of 15.0 cm. My table saw has a maximum speed of 3750 rpm. If it takes 2.50 seconds to get up to this final speed, what is the tangential velocity of the... more
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Radius Area

06/04/15

wifi modem has a radius of 15m what is the total area the wifi can re
Your hotel wifi stops working, you go across the street to the cafe to facetime your parents and get free wifi. you go outside to find a quiet place the wifi modem has a radius of 15m what is the... more
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