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 - 38
= 10
Length of the rectangle
= 20 + (4 x 10)
= 20 + 40
= 60
Area of the rectangular wall
= 60 x 48
= 2880 cm
2 (b)
Perimeter of the shaded part
= 48 + 48 + (60 - 10) + (60 - 10)
= 48 + 48 + 50 + 50
= 196 cm
Answer(s): (a) 2880 cm
2; (b) 196 cm