87 Answered Questions for the topic radius

04/18/19

Math help please!

  shown below, .Prove .

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.

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

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. 

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

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

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

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.

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.

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!💖

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

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    

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.

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?

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

07/08/17

Points/ endpoints of a circle

the endpoints of the diameter of a circle are D(7, -2) and E(11, -8). a) Determine the coordinates of the the centre of the circle. b) Determine the length of the circle's radius

04/03/17

Find the length of the side of the square that has the same area as a circle with radius r cm.

Find the length of the side of the square that has the same area as a circle with radius r cm. Find the length of the side of the square that has the same area as a circle with radius r cm.

04/03/17

The area of a circle is equal to 1 dm². Find the radius of the circle.

 The area of a circle is equal to 1 dm². Find the radius of the circle. The area of a circle is equal to 1 dm². Find the radius of the circle.

03/22/17

the radius of a circle is 9 kilometers. What is the circles area?

use 3.14 as pie

02/26/17

Find the center and the radius of the circle with equation?

x^2+y^2+6x-10y-10=0

02/12/17

Cylindrical shells

Use the method of cylindrical shells to find the volume V of the solid obtained by rotating the region bounded by the given curves about the x-axis.x + y = 7, x = 16 − (y − 3)^2

02/09/17

Extending Differentiation (Confused...)

VOLUME : A spherical balloon is inflated with gas at the rate of 500 cubic centimeters per minute. How fast is the radius of the balloon increasing at the instant the radius is (a) 30 cm and (b) 60... more

11/04/16

Circles Center and Radius

Center and radius of a circleA circle has the equation: (x - 5)^2 + y^2 = 8What are the center and radius of the circle?
1 3 4

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