Question

Please answer me in Details

With full formula.

Anyone which answer the question in formula
With right answer.
I will make him he/she the brainlist answer.​

Answer 1

Answer:

1. 15 x (x)/2=87..therefore (x) = 11.6
2. (x) x 314/20=1256..therefore (x) = 80
3. 22 x (x)/2=1705/10..therefore (x) = 15.5

General formula for area of triangle is

1/2 x (base) x (height)...

please mark it as brainliest..!