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Cost of 1 m square is Rs.30. ............... (1)
cost of x m square is Rs. 1620. ................. (2)
Dividing (2) by (1)
Total surface area of rectangle
2(lb+bh+hl).
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Cost of 1 m square is Rs.30. ............... (1)
cost of x m square is Rs. 1620. ................. (2)
Dividing (2) by (1)
\frac{1620}{30} = 54
30
1620
=54
Total surface area of rectangle
2(lb+bh+hl).
\begin{lgathered}2(5 \times 3 + 3h + 5h) = 54 \\ = > 30 + 16h = 54 \\ = > 16h = 54 - 30 \\ = > 16h = 24 \\ h\frac{24}{16} = \frac{3}{2} = 1.5m\end{lgathered}
2(5×3+3h+5h)=54
=>30+16h=54
=>16h=54−30
=>16h=24
h
16
24
=
2
3
=1.5m
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