Question

Refer to the attachment.... ​

Answer 1

Solution:

Area of the courtyard = 3750 sq m.

Height of the gravel = 1 cm or 1/100 m = 0.01 m

Now,

Volume = Base area × Height 

= 3750 × 0.01

volume = 37.5 cu m

Now, cost of 1 cu m of gravel = Rs. 6.40

Total cost of gravel = 37.5 × 6.40

Total cost of covering the courtyard with gravel of 1 cm height = Rs. 240

Answer.