Question

From a rectangular chart paper of size 100cm by 80cm, six square of side 20cm each were cut out. find the area of the remaining chart paper.

Answer 1

first take out the area of chart paper then multiply 20 by 6 and subtract it from the area of chart paper you will get the answe and the answer would be
area of rectangle=800cm
area of sqares=120cm
800-120= 680cm

Answer 2

The area of remaining chart paper is 5600 sq.cm.

Step-by-step explanation:

Length of rectangular chart paper = 100 cm

Breadth of rectangular chart paper = 80 cm

Area of chart paper = $100 \times 80 = 8000 cm^2$

Six square of side 20cm each were cut out.

Side of square = 20 cm

Area of square = $Side^2 = 20^2 = 400 cm^2$

Area of 6 squares =$6 \times 400 = 2400 cm^2$

Area of remaining portion =$8000-2400=5600 cm^2$

Hence The area of remaining chart paper is 5600 sq.cm.

#Learn more:

4 squares each of side 10 cm have been cut from each corner of a rectangular sheet of paper of size 100cm*80cm. From the remaining piece of paper, an isosceles right triangle is removed whose equal sides are each of 10 cm length. Find the area of the remaining part of the paper.

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