The radius is the distance between the center of the circle to any point on the circle. Therefore the distance from # (0, 0)# to #P (4, -3)# will give us the radius.

Explanation: In order to find the area of the circumscribed circle, we need to find its radius. There is a formula to do this, although it is a little troublesome. The formula for the circumradius is: R= abc/4A …

If a,b and c are the lengths of the sides and S is the area of the triangle the radius of the inscribed circle is given by the formula: r= (2S)/ (a+b+c) The area S ...

Mar 29, 2018 · The area of a circle of radius r is given by the well known formula: A = πr2 If the diameter is d the we have d = 2r ⇒ r = d 2, thus we have: A = π(d 2)2 = πd2 4 Thus, we have: d = 4 ⇒ A = …

The radius of a regular hexagon, also called its circumradius, is the distance from its center to its vertexes, or points. O is the center of the hexagon and A is one of the vertexes, so OA is the radius …

`````````````````````````````````````````````````````````````````````````````````````````````````````````````````` Alternative way We know, for an equilateral triangle radius of incircle (r) is half of the radius of the circumcircle (R) ( …

Feb 11, 2017 · The formula for the area of a circle is : A = πr2, where r is the radius of the circle. Given A = 49π, ⇒ 49π = πr2 ⇒ r = 7 Hence, the radius of the circle is 7km

There are two concentric circles at the center of a basketball court. The radius of the inner circle is 2 feet and the radius of the outer circle is 6 feet. What is the ratio of the circumference of the inner circle to …

A solid disk with a radius of #8 m# and mass of #8 kg# is rotating on a frictionless surface. If #360 W# of power is used to increase the disk's rate of rotation, what torque is applied when the disk is rotating …

Explanation: The volume (V) of a cone is calculated using the formula.