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I need help pleaseeee

I need help pleaseeee-example-1

2 Answers

3 votes

Answer:

20cm

Explanation:

pythagorean theorem

15^2 + b^2 = 25^2

225 + b^2 = 625

b^2 = 400

b = 20

User Vadim Bulavin
by
7.4k points
1 vote

Answer:

20 cm

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

User Joald
by
8.1k points

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