Question

1. a metal plate measuring 42 by 14 cm is cut up into small pieces of square measuring side 7mm
. how many square will be cut?

Answer 1

Answer:

12 square pieces

Step-by-step explanation:

area of metal plate = l × b

= 42 × 14 = 588 sq cm

area of square metal pieces = s × s

= 7 × 7 = 49 sq cm

number of square sheet from the rectangular sheet will be

42 × 14 = x × 7 × 7

x = 42 × 14/7 × 7

x = 6 × 2

x = 12