The diagrams (not drawn to scale) show a rectangular cardboard P and a square Q. Albert cut as many squares Q as he could from rectangular cardboard P. The remaining part of the rectangular cardboard P is shown in Figure 1.
- What is the length of RS as shown in Figure 1?
- What is the greatest number of squares Q that Albert could cut from a rectangular cardboard P?
(a)
Number of squares lengthwise
= 31 ÷ 4
= 7 r 3
Length of RS = 3 cm
(b)
Number of squares breadthwise
= 14 ÷ 4
= 3 r 2
Greatest number of squares
= 7 x 3
= 21
Answer(s): (a) 3 cm; (b) 21