find the cost of painting 3 iron boxes at the rate of rs5 per square metre, whose dimension are 1.5m × 0.85m × 0.20m, 2m × 0.65m × 0.35m and 2m × 0.90m × 0.45m ????answer = rs 70.78
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Answered by
95
Answer:
Rs 70.78
Step-by-step explanation:
Find the total surface area of the 3 boxes:
Box 1 = 2(1.5 x 0.85 + 0.85 x 0.2 + 0.2 x 1.5) = 3.49 m²
Box 2 = 2(2 x 0.65 + 0.65 x 0.35 + 0.35 x 2) = 4.455 m²
Box 3 = 2(2 x 0.9 + 0.9 x 0.45 + 0.45 x 2) = 6.21 m²
Total area = 3.49 + 4.455 + 6.21 =14.155 m²
Find the cost:
1 m² = Rs 5
4.155 m² = 5 x 14.155
4.155 m² = Rs 70.78
Answer: Rs 70.78
Answered by
11
Step-by-step explanation:
Find the cost of Painting 3 iron boxes at the rate of rupees 5 per square metre, whose dimensions are 1.5 m × 0.85 m× 0.20 m, 2m × 0.65 m× 0.35 m and 2 m× 0.90 m× 0.45 m.
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