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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 - Mathematics

MCQ

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

Options

  •  Rs. 16

  •  Rs. 80

  • Rs. 160

  • Rs. 320

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Solution

Dimensions of the wall are,

Length (l) = 8 m 

Breadth  (b) = 20 cm 

 = 0.2 m 

Height (h) = 4 m

Volume of the hall,

V= lbh

  = 8 × 4 × 0.2

 = 6.4 m3

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

=25 ×  v

=Rs. (25 ×  6.4)

= Rs . 160

The cost of building the wall is Rs.160 .

  Is there an error in this question or solution?
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APPEARS IN

RD Sharma Mathematics for Class 9
Chapter 18 Surface Areas and Volume of a Cuboid and Cube
Q 11 | Page 36
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