Question

Explain the Error A student wrote this statement: "A triangular prism has height of 15 inches and a base area of 20 square inches. The volume of the prism is 300 square inches Identify and correct the error.

Answer 1

15•20=300
300/2=159

The student did not divide by 2.

Answer 2

She's incorrect because she put, "300 *square* inches" instead of 300 *cubic* inches. We use cubic inches because we are finding volume, not area.