7/8 of an hour is 52.5 minutes. 3/10 of 52.5 minutes is 15.75 minutes. They spent 15.75 minutes warming up and cooling down.
The answer is here. Hope I did help you.
If u mean 62 times 45 on its own, then the answer is 2790. hope that helped!!
Let, the number be "a"
Now, according to the question,





So, the number is 72
84!
All the sides are 18,24, and 30. Then the two triangles are 12.