PSLE A square, not drawn to scale, is made up of four triangles T, U, V and W. The area of T is
19 the area of the square while the area of U is
16 the area of the square.
- The total areas of T and U is 250 cm2. What is the length of each side of the square?
- What fraction of the square that is Area W?
(a)
Fraction of the square made up of Areas T and U
=
19 +
16=
218 +
318 =
5185 u = 250
1 u = 250 ÷ 5 = 50
Area of the square
= 18 u
= 18 x 50
= 900 cm
2 Length of the square
= √900
= 30 cm
(b)
Areas of T and W = Areas of U and V =
12 of the area of the square
Fraction of the square that is Area W
=
12 -
19=
918 -
218
= 718
Answer(s): (a) 30 cm; (b) 718