The cost of painting the curved surface area of a cylindrical pillar of height 1

Question

The cost of painting the curved surface area of a cylindrical pillar of height 10 m and radius 3.5 m at ₹ 10/- per sq. meter is ₹ 2200/-.
(

u s e π = \frac{22}{7}

)

Options:

A . True

B . False

Answer: Option A
:
A
Curved surface area of the cylindrical pillar

= 2 π r h

= 2 \times \frac{22}{7} \times 3.5 \times 10

= 220 m^{2}

So,

t o t a l c o s t o f p a i n t i n g

= C u r v e d S u r f a c e A r e a o f p i l l a r \times C o s t p e r m^{2}

= 220 \times 10

= ₹ 2200/-
Hence, the given statement is true.

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