Question

The height of an equilateral rectangular prism decreases by two units. The new lateral area is less than the original by how much?

Answer 1

Any ideas?

Answer 2

Original lateral area was 4(1/2)bh
New lateral area is :4(1/2)(b)(h-2)

Answer 3

So to find how much less, we should subtract:
2bh-2b(h-2)=2bh-2bh_-4b

Answer 4

So 4b less than the original

Answer 5

Do you understand?

Answer 6

Yes

Answer 7

two times the area of the base
two times the perimeter of the base
two less than the the area of the base
two less than the perimeter of the base


So would it be 2 less than the base based on these answers