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 - 43
= 9
Length of the rectangle
= 26 + (4 x 9)
= 26 + 36
= 62
Area of the rectangular wall
= 62 x 52
= 3224 cm
2 (b)
Perimeter of the shaded part
= 52 + 52 + (62 - 9) + (62 - 9)
= 52 + 52 + 53 + 53
= 210 cm
Answer(s): (a) 3224 cm
2; (b) 210 cm