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
= 51 - 37
= 14
Length of the rectangle
= 28 + (4 x 14)
= 28 + 56
= 84
Area of the rectangular wall
= 84 x 51
= 4284 cm
2 (b)
Perimeter of the shaded part
= 51 + 51 + (84 - 14) + (84 - 14)
= 51 + 51 + 70 + 70
= 242 cm
Answer(s): (a) 4284 cm
2; (b) 242 cm