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
= 49 - 30
= 19
Length of the rectangle
= 26 + (4 x 19)
= 26 + 76
= 102
Area of the rectangular wall
= 102 x 49
= 4998 cm
2 (b)
Perimeter of the shaded part
= 49 + 49 + (102 - 19) + (102 - 19)
= 49 + 49 + 83 + 83
= 264 cm
Answer(s): (a) 4998 cm
2; (b) 264 cm