After doing some work in the house, Bob and Carol want to put a concrete patio on the side of the house to keep people from tracking mud inside. They decide to hire someone to do the work. The dimensions of the rectangular patio are 13 feet 10 inches by 24 feet 2 inches. The patio will need to be at least 4 inches deep. Rachael’s Ready Mix bid on the job based on the information provided. Calculate the volume of concrete needed, in cubic yards, adding 5% to allow spillage and an uneven base, round up to the nearest 1/4 cubic yard.

yd^3

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle