Question

Prachi stuck 12 pictures of each length 25 cm and breadth 8 cm, on a chart paper of length
80 cm and breadth 50 cm. What area of chart paper was left blank?​

Answer 1

Answer:

$3800 \: {cm}^{2}$

Step-by-step explanation:

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Answer 2

Answer:

1600 $cm^{2}$

Step-by-step explanation:

area of picture = l × b

                         = 25 ×  8 = 200 $cm^{2}$

area of 12 pictures = 12× 200= 2400 $cm^{2}$

area of chart= l × b

                    = 80 × 50 = 4000 $cm^{2}$

area left blank = area of chart - area of pictures

                        = 4000 - 2400

                       = 1600 $cm^{2}$