Question

A room is 10 M long 5 M broad broad and 12 m height find the cost of washing all the rupees 7 per metre square

Answer 1

Answer:

3220rs

Step-by-step explanation:

l=10m

b=5m

h=12m

so total surface area is---

2(lb+bh+lh)

=2(50+60+120)

=2x230

=460sq.m.

so,

money required=7x460

=3220 rs

Answer 2

2lb+2bh+2hl
2×10×5+2×5×12+2×10×12
460×7
3220