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SVEN [57.7K]
3 years ago
7

I need help pleaseeee

Mathematics
2 answers:
bekas [8.4K]3 years ago
6 0

Answer:

20cm

Step-by-step explanation:

pythagorean theorem

15^2 + b^2 = 25^2

225 + b^2 = 625

b^2 = 400

b = 20

goblinko [34]3 years ago
4 0

Answer:

20 cm

Step-by-step explanation:

This is a right triangle so we can use the Pythagorean theorem

a^2 +b^2 = c^2

where a and b are the legs and c is the hypotenuse

15^2 +b^2 = 25^2

225+b^2 = 625

Subtract 225 from each side

225+b^2 -225 = 625-225

b^2 = 400

Take the square root of each side

sqrt(b^2) = sqrt(400)

b = 20

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