Answer:
Step-by-step explanation:
perimeter = sum of all sides
27 = 9+7.8+x
x (third side) = 10.2
Hey i don’t wanna do math right now but there’s a link that i could post in the comments if you want it
The ladder and the wall form a right triangle.
The length is the hypotenuse = 15.
The base = 2*(15/5) = 2*3 = 6
Use pythagorean theorem to find other side of triangle: