If an area can be washed at a rate of 3100 cm 2/minute , how many square inches can be washed per hour? use the table of equivalent measures on page 15. write your answer with the correct number of significant digits.

Solution:

we are given that

An Area can be washed at a rate of 3100 cm^2/minute.

we have been asked to find how many square inches can be washed per hour?

So here we will have to do the convesrion. As we know that

Also we know that

So substitute these vales as below: