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 - 45
= 8
Length of the rectangle
= 28 + (4 x 8)
= 28 + 32
= 60
Area of the rectangular wall
= 60 x 53
= 3180 cm
2 (b)
Perimeter of the shaded part
= 53 + 53 + (60 - 8) + (60 - 8)
= 53 + 53 + 52 + 52
= 210 cm
Answer(s): (a) 3180 cm
2; (b) 210 cm