Question

the curved surface area of a cylinder is4620 cm^ 2 find the radius if height is35 cm​

Answer 1

Curved surface =

$2\pi \times r \times h$

$2 \times 22 \div 7 \times r \times 35 = 4620$

$44 \times r \times 5 = 4620$

$r = 4620 \div 220$

r= 21 cm

Answer 2

csa of cylinder is =2πr^2h =4620

2×22/7×r×r×35=4620

by solving we get=r^2=21

r=√21