Volumes Practice Test 1

Question : 3 of 40

Marks: +1, -0

The circumference of the base of a right circular cylinder is 13.2 m and sum of its radius and height is 3m. Find the radius and total surface area of the cylinder.

1.5 m; 35.5 $m^2$
2m; 37.6 $m^2$
2.1 m; 39.6 $m^2$
2.5m; 40 $m^2$

Validate

Solution:

Here, 2πr = 13.2 m
∴ r =

{132×7}/{2×22}

= 2.1 m
Total surface area of the cylinder = 2πr (h + r)
=

2 × {22}/7

× 2.1 × 3 = 39.6

m^2

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