Question

find the volume and the total surface of a right circular cylinder whose radius is 3m and height 7m​

Answer 1

$\LARGE\underline{\underline{\sf Given:}}$

• Radius of cylinder (r) = 3m

• Height of cylinder (h) = 7m

$\LARGE\underline{\underline{\sf To\:Find:}}$

• Volume of cylinder (V) = ?

• Total surface area of cylinder = ?

$\LARGE\underline{\underline{\sf Solution:}}$

$\large{\boxed{\sf Volume\:of\: Cylinder (V)=πr^2h}}$

$\implies{\sf V=\dfrac{22}{7}×3×3×7}$

$\implies{\sf V=198m^3}$

${\boxed{\sf Total\: Surface\: Area \:of\: Cylinder=2πr(r+h) }}$

$\implies{\sf 2\dfrac{22}{7}×3(3+7) }$

$\implies{\sf 2×\dfrac{22}{7}×3×10 }$

$\implies{\sf 188.5m^2 }$

$\LARGE\underline{\underline{\sf Answer:}}$

•°• Volume of cylinder 198m³

And Total Surface Area of Cylinder 188.5m²