PSLE A square, not drawn to scale, is made up of four triangles N, P, Q and R. The area of N is
116 the area of the square while the area of P is
18 the area of the square.
- The total areas of N and P is 2700 cm2. What is the length of each side of the square?
- What fraction of the square that is Area R?
(a)
Fraction of the square made up of Areas N and P
=
116 +
18=
116 +
216 =
3163 u = 2700
1 u = 2700 ÷ 3 = 900
Area of the square
= 16 u
= 16 x 900
= 14400 cm
2 Length of the square
= √14400
= 120 cm
(b)
Areas of N and R = Areas of P and Q =
12 of the area of the square
Fraction of the square that is Area R
=
12 -
116=
816 -
116
= 716
Answer(s): (a) 120 cm; (b) 716