Question

Find the area of circle those diameter is 28 cm maths

Answer 1

Answer:

r = 14 cm

area of circle = pi×r²

= 22/7 × 14

= 44 cm²

Answer 2

Answer:

615.75 sq cm

Step-by-step explanation:

Given that

Diameter of circle is 28cm

To find

Area of circle

Solution

As we know that radius is always the half of diameter hence

$radius = \frac{28}{2}$

$radius = 14cm$

As we know

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

as

$\pi = \frac{22}{7} = 3.14$

put in equation we get

$area \: of \: circle = 3.14 \times {14}^{2}$

$area \: of \: circle = 615.75 {cm}^{2}$