Question

A sheet of paper measures 40 cm x 20 cm. If a strip 4 cm wide is cut from it all around, find the area of strip cut out and area of remaining sheet of paper. ​

Answer 1

Answer:

Area of the cut out piece=416cm²

Area of the paper after cutting=384cm²

Step-by-step explanation:

Area of the paper before cutting:

40*20=800cm²

Area of the paper after cutting:

Length=40-(4+4) [because 4 cm will be cut from the top and bottom]

=40-8

=32cm

Breadth=20-(4+4) [because 4 cm will be cut from both the sides]

=20-8

=12cm

Area=32*12

=384cm²

Area of the cut out piece

800cm²-384cm²

=416cm²