The diagrams (not drawn to scale) show a rectangular cardboard D and a square E. Zeph cut as many squares E as he could from rectangular cardboard D. The remaining part of the rectangular cardboard D is shown in Figure 1.
- What is the length of FG as shown in Figure 1?
- What is the greatest number of squares E that Zeph could cut from a rectangular cardboard D?
(a)
Number of squares lengthwise
= 20 ÷ 3
= 6 r 2
Length of FG = 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