Question

The curved surface area of a cylinder is 3960 cm² if its radius is 21 cm find its height​

Answer 1

Answer:

Curved Surface area of cylinder - 3960cm²

Radius - 21 cm

Height- ?

$curved \: surface \: area = \pi \: r ^{2} h$

3960cm²=

$\binom{22}{7} \times 21^{2} \times height$

3960*7/22 - 21×21×height

180×7 = 441×height

1260/441= height

3cm (approximately) - height

Answer 2

Answer:

Step-by-step explanation: