# Base

Compute base of an isosceles triangle, with the arm a=20 cm and a height above the base h=10 cm.

Correct result:

b =  34.64 cm

#### Solution:

$(b/2)^2 = 20^2 - 10^2 \ \\ \ \\ b = 2 \sqrt{ 20^2 - 10^2} = 34.64 \ \text{cm}$

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Pythagorean theorem is the base for the right triangle calculator.

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