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
= 47 - 41
= 6
Length of the rectangle
= 24 + (4 x 6)
= 24 + 24
= 48
Area of the rectangular wall
= 48 x 47
= 2256 cm
2 (b)
Perimeter of the shaded part
= 47 + 47 + (48 - 6) + (48 - 6)
= 47 + 47 + 42 + 42
= 178 cm
Answer(s): (a) 2256 cm
2; (b) 178 cm