Question

Circle R has a diameter ST with endpoints at S(4,5) and T (-2,-3).

Answer 1

Given

$\begin{gathered} S(4,5) \\ T(-2,-3) \end{gathered}$

Solution

Diameter is 10

Radius is 5

The Circumference

$\begin{gathered} =2\pi r \\ \\ =2\times\pi\times5 \\ =10\pi \\ =31.42 \\ \end{gathered}$

The area of the circle

$\begin{gathered} =\pi r^2 \\ =\pi\times5^2 \\ =25\pi \\ =78.54 \end{gathered}$