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
= 53 - 43
= 10
Length of the rectangle
= 24 + (4 x 10)
= 24 + 40
= 64
Area of the rectangular wall
= 64 x 53
= 3392 cm
2 (b)
Perimeter of the shaded part
= 53 + 53 + (64 - 10) + (64 - 10)
= 53 + 53 + 54 + 54
= 214 cm
Answer(s): (a) 3392 cm
2; (b) 214 cm