96 Answered Questions for the topic radius

01/28/22

The radius of a spherical balloon is increasing at the rate 5cm per minute at the instant the balloon is 20cm in diameter. At what rate is air being pumped into the balloon? V = (4/3)(pi)(r^3)
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01/30/21

Spheres and radius related question
Ice cream is sold to stores in cylindrical containers with a radius of 10 cm and a height of 21cm. Each scoop of ice cream is a sphere with a radius of 2.1 cm About how many scoops of ice cream can... more
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12/03/20

This is a trig question that is too long to put in the title. See description
A small pebble stuck on the tread of a car’s tire is travelling at a linearspeed of 35 miles per hour. If the radius of the tire were 1 inch greater and itsangular velocity were the same, the... more
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Radius Speed

09/10/20

the radius around the circle?
an object travels around a circle with a constant speed. Two measurements are taken: it rotates 21 revolutions in 7 seconds. It travels 40 meters in 5 seconds. find the radius of the circle
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07/26/20

Find the circle's center and radius:
(x+1)2+(y+2)2=25
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04/29/20

A Ferris wheel completes 7 revolutions in 14 minutes. The radius of the Ferris wheel is 30 feet. What is the linear velocity of the Ferris wheel in inches per second?
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04/18/20

gears are connected by chain. The larger gear has a linear velocity of 12π/5 inches per sec. The angular velocity of the smaller gear is 32π/3 radians per min. What is the radius of the smaller gear?
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Radius Area Circle

04/11/20

How much does the area of the original circle increase?
A circle has a radius of A meters. If the radius doubles,how much does the area of the original circle increase?
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Radius Math Geometry Pi

04/18/19

Math help please!

  shown below, .Prove .
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Radius Math Geometry Area

04/14/19

Help, Please! Math ...
 is an equilateral triangle with side length 23 in. What is the area of the shaded segment? Round your answer to the nearest hundreth.
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03/28/19

A sphere and a right cylinder have the same radius and volume. Find the radius r in terms of the height h of the cylinder.
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Radius Math Geometry

02/21/19

Racquetballs have a radius of about 2.8 cm. if three balls are packaged in a can like we described for tennis balls earlier, find each volume. round to the nearest hundredth.
a. the volume of one ballb. the volume of three ballsc. the volume of the can. (remember the height is six times the radiusd. the volume of empty space in the cane. the percentage of the can filled... more
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Radius Trigonometry

08/22/18

A wheel with a radius of 7 inches is rotating at 4 revolutions per second. What is the linear speed v, in feet per second?
 This has to be rounded to the nearest integer.  I am trying to find the angular and linear velocity. 
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Radius

07/12/18

The area of a circle is 28.8 square inches. To the nearest whole number, what is the radius?
what is the radius
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05/25/18

Why does this formula work for finding the surface area of a cylinder?
In math class today, we were discussing how to find the surface area of a cylinder. Then, someone figured out that you could use the formula (radius+height)(diameter). We tested the formula and it... more
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Radius Math Volume Height

04/30/18

Which equation can be used to find the height of the cylinder if you know its volume and radius?
The following formula can be used to find the volume of a cylinder with radius, r,and height, h.V=πr^2hWhich equation can be used to find the height of the cylinder if you know its volume and... more
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03/20/18

A circle has a radius of square root of 45 units and is centered at (−2.4,−4.8). Write the equation of this circle.
There is a 2nd question with the exact same format.
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03/20/18

A circle has a radius of 5/3 and is centered at 9.2, -7.4. Write the equation of this circle.
I've been on this one for quite a while.
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03/13/18

Radius (r) of sphere is expanding at rate of 9cm/min. Volume of sphere is V=4/3(pi(r^3))
Determine the rate at which the volume is changing with respect to time when r=8cm. (in cm^3/min)
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02/20/18

Find each of the following sectors with the given radius and angle, find the arc length and the area of the sector.
1. r=6cm, central angle=1.6 rad 2. r=14cm, central angle=0.25 rad 3. r=25 cm, central angle=1.75 rad 4. r=12cm, central angle= 3/4 rad   THANK YOUU IN ADVANCE!💖
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01/15/18

What is the acceleration of the satellite? Direction of the acceleration? What is the name of the force providing the acceleration? Speed of satellite?
a 1000kg satellite orbits the Earth at a radius of 50,000 km.  What is the acceleration of the satellite? The direction of the acceleration? What is the name of the force providing the... more
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01/08/18

a unicycle made 1000 revolutions as it travelled down a road. What distance did the rider travel?
unicycle wheel had.. a radius of 30cm a diameter of 60cm and a circumference of 188.49cm    
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10/24/17

what are the coordinates of the center and the length of the radius of the circle?
The equation of a circle is x^2+y^2-2x+6y+3=0. What are the coordinates of the center and the length of the radius of the circle.
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Radius

08/17/17

radius planet has 7 rings total radius of ring system
A planet has 7 rings. The first ring is 20,000 km from the center of the planet. Each ring is 50,000 km wide and 500 km apart. What is the total radius of the ring system from the planet's center?
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08/08/17

Maths, Co ordinate geometry
A circle has diameter AB, where A = (2, −5) and B = (−4, 7).(a) Find the centre C and radius r of the circle.(b) Use the distance formula to test whether P(6, −1) lies on the circle     Just... more
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