Question

jane cuts a foam block along the red line. when she looks at the newly exposed face, what is the shape of the cross - section?
a. a rectangle, 10 in by 3 in
b. a rectangle, 4 in by 3 in
c. a square, 3 in by 3 in
d. a rectangle, 10 in by 4 in

Explanation:

Step1: Analyze the shape of the cross - section

When cutting a rectangular prism (the foam block) parallel to its sides, the cross - section is a rectangle.

Step2: Determine the dimensions of the cross - section

The cross - section has the same height and width as the original prism. The height is \(3\) in and the width is \(4\) in.

Answer:

B. A rectangle, 4 in by 3 in