Question

The right rectangular prism will be sliced perpendicular to its base along the dashed line.

Answer 1

If you slice it down the dotted line, you will have a rectangle with a width of 2 and a length of 4.

The area of the rectangle will be 8 square centimeters.
2 x 4 = 8

Answer 2

Answer:

The cross section is a rectangle and Area of rectangle is 20 cm².

Step-by-step explanation:

Given: The right rectangular prism will be sliced perpendicular to its base along the dashed line.

We have to choose the correct from the give options that correctly  describe the cross section formed by the slice and the area after slicing.

Consider the given figure then after slicing along the dotted lines we again obtain a rectangle as shown in figure below.

And area of this cross section rectangle is given by

Area of  rectangle   = l × w

Where l is length ,

w is width

given : Length = 4 cm and width = 5 cm

Area of  rectangle   = 5 × 4 = 20 cm²

Thus, the cross section is a rectangle and Area of rectangle is 20 cm².