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Irina-Kira [14]
3 years ago
13

Can someone please solve this ASAP?

Mathematics
1 answer:
olga2289 [7]3 years ago
8 0
The ladder and the wall form a right triangle.
The length is the hypotenuse = 15.
The base = 2*(15/5) = 2*3 = 6

Use pythagorean theorem to find other side of triangle:
a^2 + b^2 = c^2 \\  \\ a^2 + 6^2 = 15^2 \\  \\ a^2 + 36 = 225 \\  \\ a^2 = 189 \\  \\ a = \sqrt{189} = 3 \sqrt{21}
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