PSLE Lynn had a rectangular piece of paper, 55.2 cm by 30 cm. She cut out as many squares as possible from the paper. The side of each square was 2 cm.
- How many squares did Lynn cut out?
- What area of the paper was left?
(a)
Number of squares that can be cut out lengthwise
= 55.2 ÷ 2
= 27 r 1.2
Number of squares that can be cut out breadthwise
= 30 ÷ 2
= 15 r 0
Total number of squares
= 15 x 27
= 405
(b)
Remaining length of the paper left = 1.2 cm
Area of the paper left
= 1.2 x 30
= 36 cm
2 Answer(s): (a) 405; (b) 36 cm
2