Answer:
A ≈ 62.8 cm²
Explanation:
the area (A) of the triangle is calculated as
A = ab sinC
where a = 10, b = 13 and C = 105° , then
A = × 10 × 13 × sin105° = 65 × sin105° ≈ 62.8 cm² ( to 1 dec. place )
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ab sinC × 10 × 13 × sin105° = 65 × sin105° ≈ 62.8 cm² ( to 1 dec. place )