1.

The total surface area of a right circular cylinder is 23100 cm2 and its volume is _______ cm3. The ratio of curved surface area of the cylinder to the total area of its two bases is 2 : 1.1). 269050 cm32). 269550 cm33). 268500 cm34). 269000 cm3

Answer»

SURFACE Area of TWO bases = 2πr2 

Curved Surface Area of CYLINDER = 2πrh 

According to the question,

⇒ 2πrh/2πr2 = 2/1

2R = h

Total surface area the cylinder

⇒ 23100 = 2πr × (r + h)

⇒ 23100 = 2 × (22/7) × r(r + 2r)

⇒ 3r2 = 23100 × 7/44 

⇒ r = 35

Volume of the right circular cylinder = πr2h

= (22/7) × 352 × 70 = 269500 cm3



Discussion

No Comment Found

Related InterviewSolutions