In an isosceles triangle, the side of 15 cm, the height drawn to the base is 12 cm, find the base.

univerkov | February 4, 2021 | education

The height has formed two equal right-angled triangles. The length of the hypotenuse and one of the legs is known. Determine the size of the other leg, which is 1/2 base.

√ (15 ^ 2. – 12 ^ 2.) = √ (225 – 144) = √81 = 9 centimeters.

Let’s calculate the base.

9 * 2 = 18 centimeters.

Answer: 18 centimeters.

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