Question

A cylindrical tank is made of cement. The thickness of tank is 2 cm. height is 70 cm and
inner radius is 100 cm. Find the volume of cement material used to made the tank.

Answer 1

Answer:

Answer:

According to question ,

sum = (16% of 24.2) + (10% of 2.42)

Required sum =

24.2 × 16

+

2.42 × 10

100 100

Required sum = 3.872 + 0.242

∴ Required sum = 4.114

Answer 2

Volume of cement material used to made the tank = π(R² - r²)h

⇒ Volume of cement material used to made the tank = π × (R² - r²) × h

⇒ Volume of cement material used to made the tank = 22/7 × (R² - r²) × h

⇒ Volume of cement material used to made the tank = 22/7 × (R² - r²) × 70

⇒ Volume of cement material used to made the tank = 22/7 × (102² - r²) × 70

⇒ Volume of cement material used to made the tank = 22/7 × (102²-100²) × 70

⇒ Volume of cement material used to made the tank = 22/7 × 404 × 70

⇒ Volume of cement material used to made the tank = 22/1 × 404 × 10

⇒ Volume of cement material used to made the tank = 22 × 404 × 10

⇒ Volume of cement material used to made the tank = 88880 cm³