Question

find the volume, the lateral surface area and the total surface area of the following cylinders whose: i) Radius of the base=21 cm and height = 45 cm​

Answer 1

Answer:

Volume is 62370

LSA is 5940

TSA is 8712

Step-by-step explanation:

Volume of cylinder is πr²h

Then,

(22/7)*21*21*45

22*3*21*45

62370 cm³

LSA of cylinder is 2πrh

Then,

2*(22/7)*21*45

2*22*3*45

5940 cm²

TSA of cylinder is 2πr(r + h)

Then,

2*(22/7)*21(21+45)

8712 cm²