#areaoftriangle
The shade area is `1/3` of Triangle XTZ as the XZ is made up of 3 equipment sides.
Area of triangle XYZ
`1/2` `xx` 12 `xx` 16 = 96 cm2
Area of shaded area
96 `-:` 3 = 32 cm3
#areaoftriangle
X : Y
1 : 3
`->` 2 : 6
Y : Z
2 : 3
`->` 6 : 9
Difference between Y and X (unshaded part of Y)
6u - 2u = 4u
Difference between Z and Y (unshaded part of Z)
9u - 2u = 7u
Fraction of the unshaded area of triangle Z
`4/7`
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