Solve for the indicated variable:

a=1/2(b1+b2) h; for b1

a=0.5b+0.5bh don't know if thats right

Step-by-step explanation:

I am thinking you want me to solve for b1

the equation you gave me=a=1/2(b1+b2)h

1.distruibte

2.solve

part 1 answer = 8

part 2 answer = 72

step-by-step explanation:

part 1 explanation = add all of the numbers, then divide by how many numbers you have. so, 200/25 = 8.

part 2 explanation = not gonna lie, this is hard to explain, so just google how to do it.

answer: the resulting cross section is a rectangle. solution: a plane parallel to the base of a triangular prism will intersect a cross section that is the same shape as its bases. so the cross section is a triangle.

step-by-step explanation: