Question

determine the formula to find the area of a circle , where r is the radius and D is the diameter of the circle​

Answer 1

Answer:

The area of circle is πr^2

Answer 2

$\: \: \: \: \: \boxed{\sf \red{area \: of \: circle \: = \pi( {r)}^{2} }}$

$\: \: \: \: \: \: \: \boxed{ {\sf \pink{area \: of \: circle = ( { \frac{D}{2} )}^{2} }}}$