Answer for the 9th one
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Step-by-step explanation:
Area of 4 walls=2(7+5)3
=2×12×3
=24×3
=72 cm²
cost of painting the wall =72×10=rs720
Answered by
1
Answer:Rs. 1070
Step-by-step explanation:
L =7m
b=5m
h=3m
Area of walls and ceiling =
lateral Surface area of cuboid + area of rectangle
=2 (bh + hl) + lb
=2×(5×3+3×7) + 7×5
=2×(15+21) + 35
=2× 36+35
=72+35
=107
Cost= area to be painted + rate per sq. n
=107 × 10
= Rs. 1070
hope this helps
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