Find the area of a circle of radius `30 cm` (use `pi=3.14`)

Find the area of a circle of radius 30cm (use pi=3.14)

(i) Find the area of a circle of radius 21 cm. [Take pi = (22)/(7)] (ii) Find the area of a circle of radius 10 cm. [Take pi = 3.14]

Find the circumference of a circle of radius 10 cm. (Take pi = 3.14.]

Find the total surface area of a hemisphere of radius 10 cm . (use pi =3.14

Find the total surface area of a hemisphere of radius 10 cm . (use pi =3.14

Find the total surface area of a hemisphere of radius 10 cm . (use pi =3.14

Find the total surface area of a hemisphere of radius 10 cm . (use pi =3.14

Find the total surface area of a hemisphere of radius 10 cm. (Use pi=3.14 )

Find the total surface area of a hemisphere of radius 10 cm. (Use pi=3.14 )