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
= 50 - 42
= 8
Length of the rectangle
= 19 + (4 x 8)
= 19 + 32
= 51
Area of the rectangular wall
= 51 x 50
= 2550 cm
2 (b)
Perimeter of the shaded part
= 50 + 50 + (51 - 8) + (51 - 8)
= 50 + 50 + 43 + 43
= 186 cm
Answer(s): (a) 2550 cm
2; (b) 186 cm