Since the number after the decimal is greater than 5. Therefore you have to round 7 by adding 1 so
the answer is 638.
Answer:
What shape is it so I help you.?
Step-by-step explanation:
The smallest will be 90 degree
Step-by-step explanation:

<span>The roof is higher than the ladder can reach
10^2-1.5^2=h^2
h=sqrt(100-2.25)=9.89 feet
distance to the roof= 12-9.89</span>