Question

the floor of a rectangular hall has a perimeter 300.if the cost of painting₹20/m is ₹1500.find the height of hall​

Answer 1

SOLUTION :-

➠ cost of painting the four wall = RS = 1500

➠ Rate of painting is Rs = 10 per

$m {}^{2}$

➠ Area of four wall =

$(\frac{15000}{10} )m {}^{2} = 1500 \: m {}^{2}$

➠ $2(l + b)h = 1500$

➠ Perimeter × hight = 1500

➠ $250 \times height = 1500$

➠ height = $\frac{1500}{250}$

$= 6$

➠ Hence , the height of the hall is = 6 Meters