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
= 45 - 34
= 11
Length of the rectangle
= 24 + (4 x 11)
= 24 + 44
= 68
Area of the rectangular wall
= 68 x 45
= 3060 cm
2 (b)
Perimeter of the shaded part
= 45 + 45 + (68 - 11) + (68 - 11)
= 45 + 45 + 57 + 57
= 204 cm
Answer(s): (a) 3060 cm
2; (b) 204 cm