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
= 47 - 30
= 17
Length of the rectangle
= 26 + (4 x 17)
= 26 + 68
= 94
Area of the rectangular wall
= 94 x 47
= 4418 cm
2 (b)
Perimeter of the shaded part
= 47 + 47 + (94 - 17) + (94 - 17)
= 47 + 47 + 77 + 77
= 248 cm
Answer(s): (a) 4418 cm
2; (b) 248 cm