Figures A and B are each made up of 3 identical rectangles. Both figures have the same area of 216 cm
2 each. What is the perimeter of Figure B?
Area of one rectangle
= 216 ÷ 3
= 72 cm2
Length of each rectangle = 2 Breadths of each rectangle.
Cut each rectangle into 2 squares.
Area of each square
= 72 ÷ 2
= 36 cm2
Breadth
= √36
= 6 cm
Length
= 6 x 2
= 12 cm
Perimeter of Figure B
= 4 x 12 + 6 x 6
= 84 cm
Answer(s): 84 cm