Question

8. Area of a wall is 160 sq.
If height of the wall is 100 m, find its length.​

Answer 1

Answer:

160 /100 = 1.6 m

Step-by-step explanation:

Answer 2

Answer:

$\tt\: Let Length=l,breath=b,height=h$

$\sf \: Area \: of \: four \: walls = 2h(l+b) = 108m2$

$\sf \: h:l=2:5,h:b=4:5$

$\sf∴h:l:b=4:10:5$

$\sf \: Let h=4x,l=10x,b=5x$

$\sf \: Now, \: the \: area \: of \: four \: walls, 2×4x(15x)=108$

$\sf \: x {}^{2} = \frac{108}{120}$

$\sf \: Then \: the \: area \: of \: the \: floor \: is l×b=10x×5x=$

$\sf50× \frac{108}{120} =45m2$