The figure is made up of 4 identical rectangles, A, B, C and D. The perimeter of rectangle A is 96 cm.
- What is the breadth of rectangle B?
- Find the area of rectangle C.
(a)
Rectangles A, B, C and D are identical.
Breadth of Rectangle A = 1 u
Length of Rectangle B = 2 u
Perimeter of Rectangle A
= 1 u + 1 u + 2 u + 2 u
= 6 u
6 u = 96
1 u = 96 ÷ 6 = 16
Breadth of Rectangle B = 16 cm
(b)
Length of Rectangle C
= 2 u
= 2 x 16
= 32 cm
Area of Rectangle C
= 32 x 16
= 512 cm
2 Answer(s): (a) 16 cm; (b) 512 cm
2