hey can anyone pls help me out in dis math problem real quick I WILL MARK U AS BRAINLIEST!!!!!!!!

Answer:
1.) 4.87831517751
2.) 12.124355653
Step-by-step explanation:
A.)
The diagonal is 4.87831517751 FT long.
The diagonal equals the square root of the width squared plus the height squared.
Square root of 2 is 1.41421356237
Square root of 12 is 3.46410161514
3.46410161514 + 1.41421356237 = 4.87831517751 .
B.)
The diagonal is 12.124355653 CM long.
The main diagonal of any cube can be found by multiplying the length of one side by the square root of 3.
Square root of 3 is 1.73205080757
1.73205080757 x 7 = 12.124355653