find the cost of painting a cylindrical container closed at both ends when the radius of the base is 7 cm and height of the cylinder is 13 cm the cost of painting is ₹ 20 per sq cm.
a) ₹880
b) ₹1760
c) ₹8800
d) ₹17600
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Answer:
d) ₹17,600
Step-by-step explanation:
Radius = 7cm
Height = 13cm
Total Surface Area
= 2 x π x r (r + h)
= 2 x 22/7 x 7 (7 + 13)
= 44 (20)
= 880 cm²
Total Cost = 880 cm² x ₹ 20 per cm² = ₹17,600
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