Question

Arun is 10.2 metre long 8.5 metre wide and 4.6 metre it has a door measuring 1.5 X 2.6 and a window measuring 2 metre X 1.7 find the cost of telling the walls at the rate of rupees 13.15 per square metre​

Answer 1

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$\bold{Explanation:}$

Area of the 4 walls = 2(l+b)×h sq. units

= 2(10.2+8.5)×4.6 m sq.

= 2×18.7×4.6 m sq.

= 172.04 m sq.

Area of a door = l×b sq. units

= 1.5×2.6 m sq.

= 3.9 m sq.

Area of a window = 3.4 m sq. [ l×b ]

Total tilling area = Area of 4 walls- (area of a

door + area of a window)

= 172.04 - (3.9 + 3.4) m sq.

= 164.74 m sq.

Total cost = Rs. (13.50×164.74)

= Rs. 2223.99

= Rs. 2224

Answer 2

Answer:

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