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
= 50 - 41
= 9
Length of the rectangle
= 22 + (4 x 9)
= 22 + 36
= 58
Area of the rectangular wall
= 58 x 50
= 2900 cm
2 (b)
Perimeter of the shaded part
= 50 + 50 + (58 - 9) + (58 - 9)
= 50 + 50 + 49 + 49
= 198 cm
Answer(s): (a) 2900 cm
2; (b) 198 cm