Question

Shanti has built her new house. In her house she has also built a cubical
water tank with lid, with each outer edge 150cm for rain water harvesting
to save rain water. The tank is built in her garden which is supported by 4
cuboidal pillars as shown in the figure.
(a) The formula used to find the lateral surface area of the cuboidal pillar of
dimensions
l bh
is _____ square units.
(i) (h + b) (ii) 2(l + h) b
(iii) (l + b) (iv) 2(l + b) h

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(b) She gets the outer surface of the tank excluding the base and the top , covered with square tiles of side
30cm. The number of tiles required is ______.
(i) 120 (ii) 100 (iii) 115 (iv) 125
(c) If the cost of the tiles is Rs.420 per dozen, then the amount she has spent for buying the tiles is
(i) ₹3500 (ii) ₹4500 (iii) ₹4300 (iv) ₹5500
(d) The amount of water she can save in the cubical water tank is _______ litres.
(i) 1688 (ii) 1728 (iii) 1558 (iv) 1738

Answer 1

Answer:

break the house of shanti