Question Details

If the height of a solid right circular cylinder is 27 cm and diameter of its base is 30 cm, the total surface area (in cm2) of the right circular cylinder is:

Take π=227

Options

A

3960

B

3964

C

3978

D

3976

Show Answer

Correct Answer :

Option A

3960

Solution :

The correct option is 3960.

Given Data:

Height of the cylinder (h) = 27 cm
Diameter of the base (d) = 30 cm

Step 1: Find the radius of the base

The radius (r) is half of the diameter:

r=302=15 cm

Step 2: Formula for the total surface area of a right circular cylinder

The total surface area (TSA) of a solid cylinder is given by:

TSA=2πr(h+r)

Step 3: Substitute the given values into the formula

Using π=227:

TSA=2×227×15×(27+15)

TSA=2×227×15×42

Step 4: Simplify the expression

Dividing 42 by 7 gives 6:

TSA=2×22×15×6

TSA=44×90

TSA=3960 cm2

Thus, the total surface area of the right circular cylinder is 3960 cm2.

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