Calculate the area of the unshaded region of the given figure, which includes a triangle and a sector.

Question 15:
To calculate the area of the unshaded region, we need to find the area of triangle ABD and subtract the area of the shaded sector BAC.

Step 1: Calculate the area of triangle ABD.
The sides of the triangle are AB = 14 cm and BD = BC + CD.
Given BC = 14 cm and CD = 8 cm, so BD = 14 cm + 8 cm = 22 cm.
The angle $\angle ABD = 75^\circ$.
The area of a triangle is given by the formula $\frac{1}{2}ab\sin\theta$.

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