Question

Find the area of an triangle roof having side 12cm,13cm 11cm ,and also find its cost of painting the roof @50/cm2

Answer 1

Answer:

Step-by-step explanation:

s=11+12+13/2=18

so are=√s(s-a)(s-b)(s-c)

=√18*7*6*5

=√3870

=62.20 cm2

cost of painting

=50*62.20

=Rs 3110