Question

a 10-foot ladder leans against a wall with its foot braced 3 feet from wall's base. how far up the wall does the ladder reach? round to the nearest hundreth

Answer 1

Use pythagoras teorem

10^2 = 3^2 + x^2

x^2 = 100 - 9 = 91

x =  9.54 feet  to nearest hundredth