PSLE A square, not drawn to scale, is made up of four triangles J, K, L and M. The area of J is
114 the area of the square while the area of K is
17 the area of the square.
- The total areas of J and K is 1050 cm2. What is the length of each side of the square?
- What fraction of the square is Area of M?
(a)
Fraction of the square made up of Areas J and K
=
114 +
17=
114 +
214 =
314Areas J and K = 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 J and M = Areas of K and L =
12 of the area of the square
Fraction of the square that is Area M
=
12 -
114=
714 -
114=
614
= 37
Answer(s): (a) 70 cm; (b) 37