PSLE Risa had a rectangular piece of paper, 62.9 cm by 38 cm. She cut out as many squares as possible from the paper. The side of each square was 2 cm.
- How many squares did Risa cut out?
- What area of the paper was left?
(a)
Number of squares that can be cut out lengthwise
= 62.9 ÷ 2
= 31 r 0.9
Number of squares that can be cut out breadthwise
= 38 ÷ 2
= 19 r 0
Total number of squares
= 19 x 31
= 589
(b)
Remaining length of the paper left = 0.9 cm
Area of the paper left
= 0.9 x 38
= 34.2 cm
2 Answer(s): (a) 589; (b) 34.2 cm
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