math
posted by makeeda .
A triangle has a base of 7 ft. and an altitude of 15 ft. Find its area to the nearest tenth.
Choose the best answer from the options below:
A 52.5 ft²
B 53.5 ft²
C 54.5 ft²
D 55.5 ft²

If you're looking for someone to do your work for you, you've come to the wrong place.
We will, though, check YOUR answers. 
Calculate the area of a triangle by
Area = (base*height)/2
You will get an area that matches one of the answers.
If you don't, post how you calculated the area, and we will help you from there.