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 - 34
= 14
Length of the rectangle
= 23 + (4 x 14)
= 23 + 56
= 79
Area of the rectangular wall
= 79 x 48
= 3792 cm
2 (b)
Perimeter of the shaded part
= 48 + 48 + (79 - 14) + (79 - 14)
= 48 + 48 + 65 + 65
= 226 cm
Answer(s): (a) 3792 cm
2; (b) 226 cm