Answer:
= 54.78 square units
Step-by-step explanation:
We can calculate the area of the triangle using the formula;
Area = 1/2abSinθ ; where a and b is the sides making the angle θ.
Therefore;
Area = 1/2 bc sin C
= 1/2 × 16 × 7 × Sin 78
= 8 × 7 × sin 78
= 54.78 square units