Question

Find area of circle whose diameter is 10 cm
Hint : radius = diameter /2​

Answer 1

Answer:

radius =10 cm 

area of a circle = \piπ r^2

         =22/7 x 10x 10

         =2200/7

         =314.2857 cm^2

Answer 2

Given :-

• Diameter = 10 cm
• Radius = Diameter ÷ 2 = 10/2 = 5 cm

To find :-

➳ Area = ?

Method :-

$\sf{area \: of \: circle = \pi {r}^{2} } \\ \\ \implies \sf{area = \frac{22}{7} \times 5 \times 5} \\ \\ \implies \sf{area = \frac{22 \times 25}{7} } \\ \\ \implies \boxed{ \sf{area = 78.57 \: {cm}^{2} }}$

Additional information:

• Circumference of a circle ⭕ = 2 π r
• A circle is a 2 dimensional shape that has no points and has only 1 face.
• Diameter is the longest line in a circle