The diagrams (not drawn to scale) show a rectangular cardboard Q and a square R. Cody cut as many squares R as he could from rectangular cardboard Q. The remaining part of the rectangular cardboard Q is shown in Figure 1.
- What is the length of ST as shown in Figure 1?
- What is the greatest number of squares R that Cody could cut from a rectangular cardboard Q?
(a)
Number of squares lengthwise
= 23 ÷ 3
= 7 r 2
Length of ST = 2 cm
(b)
Number of squares breadthwise
= 10 ÷ 3
= 3 r 1
Greatest number of squares
= 7 x 3
= 21
Answer(s): (a) 2 cm; (b) 21