Question

find the area of a circle whose radius is 3.5 CM

Answer 1

area of circle = πr^2
area = 22/7×3.5×3.5
area = 38.5 cm^2

Answer 2

Answer:

Area of the circle having a radius of 3.5cm is 38.5cm²

Step-by-step explanation:

Step 1:-

We know that,

Area of a circle = πr²    [Here, "π" is a constant value and "r" is the radius]

where, π = 22/7 (a constant value) or 3.14

Step 2:-

Therefore, the radius of the circle = 3.5cm

∴ Area of the circle = ( 22/7 ) × r × r      [Here "r" denotes the radius of the circle]

                                = [(22/7) × 3.5 × 3.5 ]cm²

                                = ( 269.5/7 )cm²

                                = 38.5 cm².

∴ Area of the circle having a radius of 3.5cm is 38.5 cm².