Question

The area of a trapezoid is 40.92 square centimeters. One base of the trapezoid is 7.4 centimeters and its height is 6.2 centimeters. Which sentence explains how to find the length of the other base of the trapezoid?

-Multiply the base times the height and subtract the product from the area.


-Add the base and the height and subtract the sum from the area.


-Divide the area by the height, multiply the quotient by 2, and then subtract the known base from the product.


-Divide the area by the base, multiply the quotient by 2, and then subtract the height from the product.

Answer 1

-Divide the area by the height, multiply the quotient by 2, and then subtract the known base from the product.



`(7.4+b)/(2)*6.2=40.92\ \ \ \ \ \ |:6.2\\\\(7.4+b)/(2)=40.92:6.2\\\\(7.4+b)/(2)=6.6\ \ \ \ \ \ |*2\\\\7.4+b=6.6*2\\\\7.4+b=13.2\ \ \ \ \ |-7.4\\\\b=13.2-7.4\\\\b=5.8\ (cm)`