Question

sides of triangle are 9 CM, 40cm ,41cm find it's area? ​

Answer 1

first find height

the apply formula 1/2 into base into height

Answer 2

180cm^2

using herons formula,

s=a+b+c/2

s=9+40+41/2

s=45

area=√(s)(s-a)(s-b)(s-c)

area=√45(45-9)(45-40)(45-41)

area=√45(36)(5)(4)

area=6×2 √45×5

area=12×15

area=180 cm^2