Question

HELP ASAP!!!!!!!PLEASE SHOW WORK!!!!!!

Answer 1

Area = 72.62 m²

Explanation:

Area of a triangle with the given three sides is given by,

Area =
`√(s(s-a)(s-b)(s-c))`

Here, s =
`(a+b+c)/(2)`

And a, b, c are the sides of the triangle.

From the question,

a = 20 m, b = 10 m and c = 15 m

s =
`(20+10+15)/(2)`

s = 22.5

Substitute these values in the formula,

Area =
`√(22.5(22.5-20)(22.5-10)(22.5-15))`

=
`√(22.5(2.5)(12.5)(7.5))`

=
`√(5273.4375)`

= 72.62 m²