The cost of constructing a wall 8 m long, 4 m high and 10 cm thick at the rate of Rs. 25 per m³ is

(a) Rs. 16

(b) Rs. 80

(c) Rs. 160

(d) Rs. 320

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Solution

Dimensions of the wall are,

Length

Breadth

Height

Volume of the hall,

Cost of building the wall at the rate of Rs. 25/m³,

The cost of building the wall is.

Hence, the correct option is (c).

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