Question 112
The total surface area of a right circular cylinder with radius of the base 7 cm and height 20 cm is:
Solution
Radius of cylinder = 7 cm and height = 20 cm
=> Total surface area of a right circular cylinder = $$2\pi r(r+h)$$
= $$2\times\frac{22}{7}\times7\times(7+20)$$
= $$44\times27=1188$$ $$cm^2$$
=> Ans - (A)
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