Question

What is the area of a cirlce whose diameter is 42cm?

Answer 1

Answer:

1385.44 is ur answer....

Hope it helps

Answer 2

Hey mate ☺️

Answer:

$1386 \: {cm}^{2}$

Step-by-step explanation:

$diameter \: (d) = 42cm \\ radius \: (r) \: = \frac{d}{2} = \frac{42}{2} \\ r \: = \: 21cm$

Area of circle =

$\pi {r}^{2}$

$\frac{22}{7} \times 21 \times 21 \\ = 22 \times 21 \times 3 \\ = 462 \times 3 \\ = 1386 \: {cm}^{2}$

I Hope it helps you ☺️ ✌️ ✌️