if the cost of painting a room is $2 for 1cm² then how much will it cost for 20cm²?
std 7
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Answer:
ஃ Cost of painting a room 20 cm²
= ₹ 40
Step-by-step explanation:
Cost of painting a room per cm² = ₹ 2
Cost of painting a room 20 cm² = ₹ 2 × 20 = ₹ 40
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