Becky is three years younger than carly. three years ago the sum of their ages was 27. finf their ages

Lets say Becky currently is x, so Carly is x+3.

3 years ago, Becky was x-3, and Carly was x.

x-3+x=27

2x=30

x=15

Becky is 15

Carly is 18

4sqrt5

step-by-step explanation:

the base has dimensions of 8 x 4, so the diagonal is 64 + 16 square rooted or 4sqrt5.