Question

ring the cost of white washing a wall of length 10m and breadth 7m at the rate of Rs.12 per sq.m.​

Answer 1

Answer:

ANSWER

l=10m,b=4m,h=4m

Area of wall =2(lh+bh)

                 =2(10×4+4×4)

                  =112

cost of whitewashing is=15×112=1680

Cost ⇒Rs.1680

Step-by-step explanation:

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Answer 2

➤ Given :-

Length of the wall :- 10 metres

Breadth of the wall :- 7 metres

Rate for each sq.m :- ₹ 12

➤ To Find :-

Cost of white washing the wall…….

➤ Solution :-

First we should find the area of the wall....

Area of the wall :-

$\tt \longrightarrow 10 \times 7$

$\tt \longrightarrow70 \: \sf \: metres^{2}$

Now,

Rate of white washing the wall :-

$\tt \longrightarrow70 \times 12$

$\tt \longrightarrow \sf rs \: \tt840$

$\Huge\therefore$The rate of white washing the wall is ₹ 840.

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