How far from the base of the house do you need to place a 13-foot ladder so that it exactly reaches the top of a 10- foot tall wall

Can someone me out here number 4 plz

A. what is the area of the base? use complete sentences to explain your reasoning. b. what is the volume of the prism? use complete sentences to explain your reasoning.

Suppose that in 2008 , 840,800 citizens died of a certain disease assuming the population of teh country is 399 miliion, what is the mortality rate in units of deaths per 100,000 people?