Question

A circle of radius 2.1 cm is cut out from a square piece of plastic sheet of side 7 cm what is the area of the left over plastic sheet

Answer 1

Answer:

Area of the remaining plastic sheet is 35.14 $cm^2$

Step-by-step explanation:

Side of the square  a =7 cm

Area of the square is $a^2 =7^2 =49cm^2$

circle of radius 2.1 cm is cut from the square

Area of the  the circle can be cut is

$\pi r^2 =\pi 2.1^2 =4.41\pi =13.85 cm^2$

Area of the remaining metallic sheet is = 49- 13.85

=35.14 $cm^2$

Area of the remaining plastic sheet is 35.14 $cm^2$

Answer 2

Answer:

Answer:

Area of the remaining plastic sheet is 35.14 cm^2cm

2

Step-by-step explanation:

Side of the square a =7 cm

Area of the square is a^2 =7^2 =49cm^2a

2

=7

2

=49cm

2

circle of radius 2.1 cm is cut from the square

Area of the the circle can be cut is

\pi r^2 =\pi 2.1^2 =4.41\pi =13.85 cm^2πr

2

=π2.1

2

=4.41π=13.85cm

2

Area of the remaining metallic sheet is = 49- 13.85

=35.14 cm^2cm

2

Area of the remaining plastic