. A contractor is cutting wood to brace the side of a
building. The height of the wall is 15 feet and the
diagonal is 25 feet, but he forgot to measure the
length. What is the base of the wall?
split into two right angled triangles label your sides a, b and c C always has to be the hypotenuse in a right angled triangle it doesn’t matter which is a/which is b a^2+b^2=c^2 we know B and C A^2= C^2-B^2 C=25 B=15 25^2-15^2=20^2 base=20feet
