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Find the length of the unknown side.
25 cm
15 cm

Find the length of the unknown side. 25 cm 15 cm-example-1
User Nathasm
by
6.8k points

1 Answer

3 votes

Answer:

b = 20 cm.

Explanation:

Define and explain:

This is a right triangle, so the Pythagorean Theorem applies.

The Pythagorean Theorem states that the sum of the squared legs will equal the squared length of the hypotenuse.

The legs of a triangle are the sides that form the right angle.

The hypotenuse is the longest side; the hypotenuse is always diagonal from the small square indicating a right angle.

Solve:


a^2+b^2=c^2


a,b-legs


c-hypotenuse


15^2+b^2=25^2


225+b^2=625


625-225=400


b^2=400


b=20

Conclude:

Therefore, the length of the unknown side is 20 centimeters.

User Dinesh Kaushik
by
6.7k points
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