PSLE A square, not drawn to scale, is made up of four triangles P, Q, R and S. The area of P is
110 the area of the square while the area of Q is
15 the area of the square.
- The total areas of P and Q is 270 cm2. What is the length of each side of the square?
- What fraction of the square is Area of S?
(a)
Fraction of the square made up of Areas P and Q
=
110 +
15=
110 +
210 =
310Areas P and Q = 3 u
3 u = 270
1 u = 270 ÷ 3 = 90
Area of the square
= 10 u
= 10 x 90
= 900 cm
2 Length of the square
= √900
= 30 cm
(b)
Areas of P and S = Areas of Q and R =
12 of the area of the square
Fraction of the square that is Area S
=
12 -
110=
510 -
110=
410
= 25
Answer(s): (a) 30 cm; (b) 25