The diagrams (not drawn to scale) show a rectangular cardboard A and a square B. Justin cut as many squares B as he could from rectangular cardboard A. The remaining part of the rectangular cardboard A is shown in Figure 1.
- What is the length of CD as shown in Figure 1?
- What is the greatest number of squares B that Justin could cut from a rectangular cardboard A?
(a)
Number of squares lengthwise
= 35 ÷ 4
= 8 r 3
Length of CD = 3 cm
(b)
Number of squares breadthwise
= 18 ÷ 4
= 4 r 2
Greatest number of squares
= 8 x 4
= 32
Answer(s): (a) 3 cm; (b) 32