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
= 54 - 40
= 14
Length of the rectangle
= 26 + (4 x 14)
= 26 + 56
= 82
Area of the rectangular wall
= 82 x 54
= 4428 cm
2 (b)
Perimeter of the shaded part
= 54 + 54 + (82 - 14) + (82 - 14)
= 54 + 54 + 68 + 68
= 244 cm
Answer(s): (a) 4428 cm
2; (b) 244 cm