Question

Write an expression to represent a circle's area in terms of its diameter, d .

Answer 1

Answer:

(d/2)^2 pi

Step-by-step explanation:

To find the area of a circle the formula is A=pi times radius sqaured. Since we do not have the radius we need to find it. The radius will always be half the diameter hence the (d/2). This will give us the radius, next is just to complete the area formula by squaring the radius and multiplying it by pi.  i hope this helps :)

Answer 2

Answer:

1/4pi d^2

Step-by-step explanation: