Question

27. The sides of a triangle shaped sheet are 5 cm, 12 cm and 13 cm. Find the cost of paining on
the sheet at the rate of Rs 30 per cm?​

Answer 1

Answer:

area of triangle by heron formula semiperimeter=(5+12+13)=2=15

a=5,b=12,c=13

area=√s(s-a)(s-b)(s-c)

then,

area=√15(15-5)(15-12)(15-13

area=√15x10x3x2

area=√1900

area=30cm²

then costs at rs30 per cm² is

=30x30=900ruppes

Answer 2

Step-by-step explanation:

Please mark me as Brainliest