Five identical square tiles were pasted onto a rectangular wall shown .
- What is the area of the rectangular wall?
- What is the perimeter of the shaded part?
(a)
Length of each square tile
= 53 - 40
= 13
Length of the rectangle
= 28 + (4 x 13)
= 28 + 52
= 80
Area of the rectangular wall
= 80 x 53
= 4240 cm
2 (b)
Perimeter of the shaded part
= 53 + 53 + (80 - 13) + (80 - 13)
= 53 + 53 + 67 + 67
= 240 cm
Answer(s): (a) 4240 cm
2; (b) 240 cm