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 - 37
= 12
Length of the rectangle
= 28 + (4 x 12)
= 28 + 48
= 76
Area of the rectangular wall
= 76 x 49
= 3724 cm
2 (b)
Perimeter of the shaded part
= 49 + 49 + (76 - 12) + (76 - 12)
= 49 + 49 + 64 + 64
= 226 cm
Answer(s): (a) 3724 cm
2; (b) 226 cm