) If the length of a rectanglar wall is 20m. and its width
is 12 m. What is it's area? If the wall is painted, the
labour charge is Rs.25 per sq.m. What is the cost of
painting?
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Answer:
L = 20 m
B = 12 m
area of rectangular wall = L × B
= 20 × 12
= 240 m²
cost of 1 m² wall painting = rs. 25
cost of 240 m² wall painting = rs . 25 × 240
= rs. 6000
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