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 - 41
= 11
Length of the rectangle
= 25 + (4 x 11)
= 25 + 44
= 69
Area of the rectangular wall
= 69 x 52
= 3588 cm
2 (b)
Perimeter of the shaded part
= 52 + 52 + (69 - 11) + (69 - 11)
= 52 + 52 + 58 + 58
= 220 cm
Answer(s): (a) 3588 cm
2; (b) 220 cm