Question

URGENT PLEASE SOLVE!​

Answer 1

Answer:

Step-by-step explanation:

d= 10cm, r₁=5cm, total radius = 5cm + 2cm = 7cm=r₂, h= 8cm

a. Volume = πr₂²h = 22/7 ×7×7×8

                 = 22 × 56 = 1232cm³

  Capacity = 1232/1000 = 1.232 L    [since 1cm³ = 1/1000 L]

b. Volume of metal used = πr₂²h - πr₁²h = πh (r₂²-r₁²)

                                        =πh [(7)²-(5)²] = πh (49-25)

                                        = 22/7 × 8 × 24 = 1232/7 cm³