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
= 18 + (4 x 10)
= 18 + 40
= 58
Area of the rectangular wall
= 58 x 48
= 2784 cm
2 (b)
Perimeter of the shaded part
= 48 + 48 + (58 - 10) + (58 - 10)
= 48 + 48 + 48 + 48
= 192 cm
Answer(s): (a) 2784 cm
2; (b) 192 cm