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"If a = 9.7 cm, angle B = 64° and c = 8.8 cm then the area of Δ ABC is" Multiple Choice Questions (MCQ) on intersection of sets with choices 38.36 cm², 42.36 cm², 25 cm², and 24.35 cm² for online elementary school. Solve trigonometry and trigonometry formulas quiz questions for online certificate programs for online certifications.

MCQ: If a = 9.7 cm, angle B = 64° and c = 8.8 cm then the area of Δ ABC is

1. 38.36 cm²
2. 42.36 cm²
3. 25 cm²
4. 24.35 cm²

A

MCQ: If a = 16.5 cm, angle B = 52° and c = 10 cm then the area of Δ ABC is

1. 72.01 cm²
2. 83.01 cm²
3. 52.03 cm²
4. 65.01 cm²

D

MCQ: The formula for the area of a triangle is

1. 1/height x base
2. height x base
3. 1/2 x base x height
4. 1/base x height

C

MCQ: The formula for the area of a triangle ABC is

1. 1/2ab sin C + 1/2bc sin A + 1/2ac sin B
2. 1/2ab sin C = 1/2bc sin A = 1/2ac sin B
3. 3/2ab sin C = 3/2bc sin A = 3/2ac sin B
4. 2ab sin C = 2bc sin A = 2ac sin B

B

MCQ: In Δ ABC, angle A = 110° and AC = 2AB. If the area of Δ ABC is 15.5 cm² then the length of AB is

1. 3.06 cm
2. 6.05 cm
3. 4.06 cm
4. 5.06 cm

C