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
= 48 - 33
= 15
Length of the rectangle
= 25 + (4 x 15)
= 25 + 60
= 85
Area of the rectangular wall
= 85 x 48
= 4080 cm
2 (b)
Perimeter of the shaded part
= 48 + 48 + (85 - 15) + (85 - 15)
= 48 + 48 + 70 + 70
= 236 cm
Answer(s): (a) 4080 cm
2; (b) 236 cm