Question

Find the area of a circle of radius 3.5cm

Answer 1

Answer:

Area of the circle is $38.48 cm^2$

Step-by-step explanation:

Area of circle $A = \pi r^2$

here r= 3.50cm

$A = \pi r^2\\A= \pi \times 3.5^2\\A=38.48 cm^2$

Area of the circle is $38.48 cm^2$

Answer 2

Answer:

Area of circle is 38.5 ${cm}^{2}$

Step-by-step explanation:

Given -

Radius of circle is 3.5 cm

To find -

The Area of circle

Solution -

As we know that,

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

Where, r is radius of circle

Put the value of r we get

Area of circle = $\pi \times {3.5}^{2}$

Square means multiply the given values with itself twice.

${3.5}^{2} = 3.5\times 3.5= 12.25$

Square of 3.5 is 12.25

Area of circle = $\pi \times 12.25$

The value of π is $\frac{22}{7}$

Area of circle = $\frac{22}{7} \times 12.25$

Area of circle = 38.50

Hence,

Area of circle is 38.5 ${cm}^{2}$