Radius and total surface area of a cylinder are 7 cm and 968 cm2 resp

1.	Radius and total surface area of a cylinder are 7 cm and 968 cm2 respectively. Find its height.(use π = 22/7).
Answer» Given, Radius of cylinder (r) = 7 cm Total Surface Area = 968 sq. cm. Height (h) = ? Total surface area of cylinder = 2πr(h + r) By putting values 968 = 2 x 22/7 x 7(h + 7) 968 = 44(h + 7) 968/44 = h + 7 22 = h + 7 h = 22 – 7 h = 15 cm. ∴ Height of cylinder = 15 cm.

Radius and total surface area of a cylinder are 7 cm and 968 cm2 respectively. Find its height.(use π = 22/7).

Answer»

Given,

Radius of cylinder (r) = 7 cm

Total Surface Area = 968 sq. cm.

Height (h) = ?

Total surface area of cylinder = 2πr(h + r)

By putting values

968 = 2 x 22/7 x 7(h + 7)

968 = 44(h + 7)

968/44 = h + 7

22 = h + 7

h = 22 – 7

h = 15 cm.

∴ Height of cylinder = 15 cm.