Question

The area of the circle of diameter is 8.4 cm is _________​

Answer 1

Step-by-step explanation:

Area of circle=πr^2

=22/7*4.2*4.2

=55.44cm^2

Answer 2

Answer:

First find radius

$radius = \frac{diameter}{2}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{8.4 \: cm}{2}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: = 4.2 \: cm$

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

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \:= \frac{22}{7} \times 4.2 \: cm \: \times 4.2 \: cm$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{388.08 \: cm^{2} }{7}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 55.44 {cm}^{2}$

Step-by-step explanation:

Hope this helps you

# By Sparkly Princess