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
= 52 - 36
= 16
Length of the rectangle
= 22 + (4 x 16)
= 22 + 64
= 86
Area of the rectangular wall
= 86 x 52
= 4472 cm
2 (b)
Perimeter of the shaded part
= 52 + 52 + (86 - 16) + (86 - 16)
= 52 + 52 + 70 + 70
= 244 cm
Answer(s): (a) 4472 cm
2; (b) 244 cm