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
= 46 - 31
= 15
Length of the rectangle
= 28 + (4 x 15)
= 28 + 60
= 88
Area of the rectangular wall
= 88 x 46
= 4048 cm
2 (b)
Perimeter of the shaded part
= 46 + 46 + (88 - 15) + (88 - 15)
= 46 + 46 + 73 + 73
= 238 cm
Answer(s): (a) 4048 cm
2; (b) 238 cm