Question

the diameter of the base of a right circular cylinder is 42 cm and the hight is 10 cm find its curved surface area

Answer 1

Answer:

curved surface area= 1320cm²

Step-by-step explanation:

Step 1:- 2πrh put the value in formula

Answer 2

$\sf \Large Solution!!$

$\sf \large Given:$

$\sf \to$ Diameter = 42 cm

$\sf \therefore$ Radius = 42 cm ÷ 2 = 21 cm

$\sf \to$ Height = 10 cm

$\sf \large To\:find:$

$\sf \to The\:curved\: surface\:area\:of\:the\:cylinder.$

$\sf \large Formula:$

$\boxed{\blue{\sf Curved\:surface\:area=2\pi rh}}$

$\sf \large So,$

$\sf \to Curved\:surface\:area=2\times \dfrac{22}{7}\times 21\:cm \times 10\:cm$

$\sf \bigstar Curved\:surface\:area=1320\:cm^{2}\bigstar$