Question

curved surface area of right cylinder of height 21cm is 957 CM square find the diameter of the base of the cylinder

Answer 1

Given :-

C.S.A of cylinder = 957cm²

height = 21 cm

C.S.A = 957

=> 2πrh = 957

=> 2×22/7×r×21 = 957

=> 132×r = 957

=> r = 957÷132

=> r = 7.25

radius of the cylinder = 7.25cm

Diameter = 2r = 2×7.25 = 14.5 cm

Answer 2

Answer:

Step-by-step explanation:

CSA=2πrh=957

21r=(957×7)/2×22

By solving

r=7.25

D=7.25×2

= 15.5