The diagrams (not drawn to scale) show a rectangular cardboard M and a square N. Jack cut as many squares N as he could from rectangular cardboard M. The remaining part of the rectangular cardboard M is shown in Figure 1.
- What is the length of PQ as shown in Figure 1?
- What is the greatest number of squares N that Jack could cut from a rectangular cardboard M?
(a)
Number of squares lengthwise
= 20 ÷ 3
= 6 r 2
Length of PQ = 2 cm
(b)
Number of squares breadthwise
= 10 ÷ 3
= 3 r 1
Greatest number of squares
= 6 x 3
= 18
Answer(s): (a) 2 cm; (b) 18