Question

One side of a righ angled triangular scarf is 80cm and its longest side is 1m. Find its cost at the rate of Rs.250 per square meter

Answer 1

Total area measures 180 sq.cm(1.8 sq.meter)
so total cost is 450 RS.

Answer 2

Hi ,

Length of the highest side = hypotenuse = a = 1m

Length of one side = b = 80cm= 0.8m

Let the second side = hight = h m

By Phythagoruas Theorem ,

b² + h² = a²

h² = a² - b²

= 1² - ( 0.8 )1

= 1 - 0.64

= 0.36

h = √0.36

h = 0.6 m

Therefore ,

Area of scarf = bh/2

=( 0.6 × 0.8 )/2

= 0.24 square meters

According to the problem given ,

Cost 1 sq m scarf = Rs 250

Cost of 0.24 m scarf = 0.24 × 250

= Rs 60

I hope this helps you.

:)