Harry, Jeff, and Roberta are three years apart, and this year the sum of their ages are equal to their 42 year old father. What are the ages of Harry, Jeff, and Roberta?

The answer would be d i think but i’m for sure it is not a and c

The correct answer will be d. -4

Kbuick friend gucci buick brb gotta change me clothes and i will get to see my mom in the nearest tenth anniversary of u and chris life i just gonna get a baby in a room first time for everything baby and for all i know i was just asking for me friend request to the nearest tenth anniversary of u and chris brown, afternoon or sister and can eat a new account and then tell u something don't have the

Use pythagorean’s theorem and find the missing side lengths of the two smaller triangles and add them together
13^2 - 12^2 = 5
15^2 - 12^2 = 9
5+9 = 14
14 is the length of each side of the square
14^2 + 14^2 = 19.8
19.8 is the diagonal length of the inside if the square