Question

20 circular plates each of radius 7 cm and thickness 5 by 12 CM are placed one above another to form a right circular cylinder find the volume of cylindrical ​

Answer 1

Answer:

1283 cu cm

Step-by-step explanation:

thickness of plate = 5/12 cm

height of cylinder = 5/12 × 20

= 100/12

= 25/3 cm

radius of plate = 7 cm

volume of cylinder = πr^2h

$= \frac{22}{7} \times {7}^{2} \times \frac{25}{3} \\ = 22 \times 7 \times \frac{25}{3} \\ = 154 \times \frac{25}{3} \\ = 154 \times 8.33 \\ = 1283 \: approx$

therefore the volume of cylinder is = 1283 cu cm

hope you get your answer