Question

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

Answer 1

Answer:

Area = 72.62 m²

Step-by-step explanation:

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

Area = $\sqrt{s(s-a)(s-b)(s-c)}$

Here, s = $\frac{a+b+c}{2}$

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

From the question,

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

s = $\frac{20+10+15}{2}$

s = 22.5

Substitute these values in the formula,

Area = $\sqrt{22.5(22.5-20)(22.5-10)(22.5-15)}$

        = $\sqrt{22.5(2.5)(12.5)(7.5)}$

        = $\sqrt{5273.4375}$

        = 72.62 m²