In each part, a and b represent the length of a leg of a right triangle, and c represents the length of its hypotenuse. Find the missing length, given the other two lengths.
b=21, c= 29, a =

what is the question? i am guessing you are looking for the area.

to find an area, you have to do length x width.

in this case, it would be 12 ft x 4 ft = 48 sq. ft

you need to give us more information since we can't answer

use distributive property on all like terms and change your signs if you have a double negative or if you have positive/negative