Question

The volume of a cylinder is 2512 cu cm
and its height is 12.5 cm. Find the radius of
the base.
(i = 3.14)​

Answer 1

Answer:

r=8cm,c.s.a.=628cm²

Step-by-step explanation:

volume of cylinder = 2512³ cm

height = 12.5cm

radius = ?

volume of cylinder = πr²h

2512 = 3.14×r²×12.5

2512÷12.5 = 3.14×r²

200.96 = 3.14×r²

200.96÷3.14 = r²

64 = r²

r² = 64

r = √64

r = 8cm

lateral surface area=2πrh

lateral surface area=2×3.14×8×12.5

lateral surface area=628cm²

Answer 2

Step-by-step explanation:

For Cylinder,

Volume(V) = 2512 cc

Height (h)= 12.5 cm

Radius (r) = ?

V = πr²h

2512= 3.14r²(12.5)

2512/12.5= 3.14 r²

200.96 = 3.14 r²

r² = 64

r = 8 cm Answer