Q.7 A board of sides 5m 20 cm and 3m 40cm is to be painted, find the cost of of painting is the rate is Rs 25 per square meter. * 2 points Rs 442 Rs 550 Rs 622
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Answer:
Let the sides be l and b
here l = 5 m 20 cm = 5.20 m
b = 3 m 40 cm = 3.40 m
area of black board = lxb
= 5.20 x 3.40 = 17.68 m^2
cost of painting = 17.68 x 12
= Rs 212.16
SIMILAR QUESTIONS:
Q.A square wall with side 5 metres must be painted in white. The painting costs Rs. 250 per m2. Find the cost of painting 4 such walls.
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