1.-28×-28×-28+13×13×13+16×16×16
=21,952+2,197+4,096
=28,245.
2.12×12×12+-7×-7×-7+-5×-5×-5
=1,728+-343+-125
=1,260
Answer:
10 cm!
I think...it's really basic math so...maybe?
If it was 3:55 the time after an hour and a half would be 5:25
179 / 9 is about 20
exact = 19.888888