Find the squre root of 2704

Angel entered a triathlon (a three-part race). he swam 1 mile, rode his bike 30 miles, and ran 10 miles. how far did he go altogether? a. 11 miles b. 123 miles c. 41 miles d. 40 miles

How is working backward similar to solving an equation?

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square