PSLE A square, not drawn to scale, is made up of four triangles F, G, H and J. The area of F is
114 the area of the square while the area of G is
17 the area of the square.
- The total areas of F and G is 1050 cm2. What is the length of each side of the square?
- What fraction of the square is Area of J?
(a)
Fraction of the square made up of Areas F and G
=
114 +
17=
114 +
214 =
314Areas F and G = 3 u
3 u = 1050
1 u = 1050 ÷ 3 = 350
Area of the square
= 14 u
= 14 x 350
= 4900 cm
2 Length of the square
= √4900
= 70 cm
(b)
Areas of F and J = Areas of G and H =
12 of the area of the square
Fraction of the square that is Area J
=
12 -
114=
714 -
114=
614
= 37
Answer(s): (a) 70 cm; (b) 37