Question

4. The area of a circle of diameter 'd' is​

Answer 1

Step-by-step explanation:

TL;DR (Too Long; Didn't Read)

TL;DR (Too Long; Didn't Read)The area of a circle is the amount of space the circle covers. The formula for calculating the area of a circle is A = πr2 where pi (π) equals 3.14 and the radius (r) is half the diameter.

Answer 2

Answer:

Radius of circle = d/2

$area \: of \: circle \: = \pi \: {r}^{2}$

$22 \div 7 \times ({d \div 2})^{2}$

$22 \div 7 \times d \div 4$

$11d \div 7$

Hope it helps you