Given an ABCD-parallelogram, angle A = 30 °, AD = 4 cm, AB = 10 cm Find the area ABCD.

univerkov | July 2, 2021 | education

Let’s find the area of the figure by the formula: S = a * b * sina.

Knowing that sin 30 ° = 1/2 and the adjacent sides that form this angle, we simply substitute the problem data into the formula, we get:

S = 4 * 10 * 1/2 = 20 (cm2).

Answer: the parallelogram area is 20 cm2.

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