Question

In a right triangle ground , the sides adjancent to the right angle are 50m and 80m . Fine the cost of cementing the ground at rs 5 /sq.m

Answer 1

In triangle ABC,

AC = 80 m

BC = 50 m

AB =

$\sqrt{ {ac}^{2} - {bc}^{2} }$

= square root of 4900 = 70 m

area of triangle abc =1/2 × base × height

=1/2 x 50 x 70

=1750 m2

total cost = 5×1750=₹8750