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If you divide a radius of a circle by 2 what will happen to the area?
If the radius of a circle becomes 1/2 as long, the area becomes 1/4 as much.
How do you find the circumference of a circle without knowing the radius and area?
You will have to measure some part of the circle. As long as you have absolutely no information about a circle, you can't do any calculations.
What is the length of this radius of the circle?
To find the radius you should either know the area or the circumference. The area is found by multiplying the radius squared by pi which is 3.14159 The equation is ... A=pi x r2 The area is the total amount of space inside the circle The circumference is found by multiplying 2 and pi and radius together. The equation is ... C=2 x pi x r The circumference is the total amount of length around the outside of the circle. So with this information you should be able to find the length of the radius. If your not sure what the radius is. The radius is the length from the center of the circle to one of the points on the outer side of the circle. The radius is the same distance to any point on the outer side of the circle as long as the radius starts in the middle point of the circle.
Find the area of a circle with a diameter of 5 inches long?
pi x 2.5 squared because 2.5 is the radius. the radius OS half the diameter. the formula for area of a circle is pi x r squared. pi is 3.141593
If a circle has a radius of 8 cm long how long is the circle's diameter?
16cm
