Question

Radius= 3.5cm
find area
of
circle​

Answer 1

Step-by-step explanation:

$\\ radius \: of \: circle \: = 3.5cm \\ area \: of \: circle=\pi {r}^{2} \\ value \: of \: \pi = \frac{22}{7 } \\ so \: area \: of \: circle = \frac{22}{7} \times 3.5 \times 3.5 = 38.5cm$

Answer 2

Answer:

Hence,area of the circle is$38.5cm^{2}$

Step-by-step explanation:

Given-

Radius of the circle is 3.5cm

We have to find the area of circle

Solution-

As we know that,

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

r is a radius of circle.

Put the given values in these formula we get

Area of circle=$\pi$×$(3.5)^{2}$

Square means multiplying a number by itself

$3.5^{2} =3.5$×$3.5$$=12.25$

Square of 3.5 is 12.25

Area of circle=$\pi$×$12.25$

Put the value of $\pi=\frac{22}{7}$

Area of circle=$\frac{22}{7}$×$12.25$

Area of circle=38.5

Hence,area of the circle is$38.5cm^{2}$