The diagrams (not drawn to scale) show a rectangular cardboard R and a square S. Justin cut as many squares S as he could from rectangular cardboard R. The remaining part of the rectangular cardboard R is shown in Figure 1.
- What is the length of TU as shown in Figure 1?
- What is the greatest number of squares S that Justin could cut from a rectangular cardboard R?
(a)
Number of squares lengthwise
= 31 ÷ 4
= 7 r 3
Length of TU = 3 cm
(b)
Number of squares breadthwise
= 18 ÷ 4
= 4 r 2
Greatest number of squares
= 7 x 4
= 28
Answer(s): (a) 3 cm; (b) 28