Atriangle has a base of 9 feet and a height of 12 feet. what is the area of the triangle? a. 42 ft2 b.54 ft2 c.84 ft2 d. 108 ft2

For a triangle: A=1/2bh

the base times the height is 9*12, or 108.

you then multiply that by 1/2. you could also just divide it by 2 and get the same answer.

Then you have your answer, which is B.54 ft²

You can find the area of a rectangle by multiplying the length and height. so multiply 1/2*7/4(which is the simpler version of 1 3/4) and you get 7/8 as your answer.