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Setler [38]
2 years ago
6

If the square of the hypotenuse of an isosceles right triangle is 128 cm2, find the length of each side.​

Mathematics
2 answers:
kotegsom [21]2 years ago
5 0
<h3>⋆Solution:</h3>

<u>Let the two equal side of right angled isosceles triangle, right angled at Q be k cm.</u>

⋆ Given: h2 = 128

<u>So, we get</u>

\small\bold{PR2 = PQ2 + QR2}

\small\bold{h2 = k2 + k2 }

\small\bold\pink{ ⇒ }\small\bold{ 128 = 2k2 }

\small\bold\pink{ ⇒ }\small\bold{\frac{128}{2} = k2 }

\small\bold\pink{ ⇒ }\small\bold{ 64 = k2}

\small\bold\pink{ ⇒ }\small\bold{ \sqrt{64} = k}

\small\bold\pink{ ⇒ }\small\bold{8 = k }

<u>Therefore, length of each side is 8 cm.</u>

denis-greek [22]2 years ago
3 0

Answer:

<u>8 cm</u>

Step-by-step explanation:

Let the length be l.

Then, by Pythagorean Theorem,

l² + l² = 128

2l² = 128

l² = 64

l = <u>8 cm</u>

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