Question

Please help!!

Use Heron’s Area Formula to find the value of “x” in the triangle with the given measures. Area = 21.3
[A] x=7.6
[B] x=7
[C] x=8.7
[D] x =5.9

Answer 1

the answer is B, x=7

Explanation:

heron's area formula:

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

`area = √(s(s - a)(s - b)(s - c))`