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aalyn [17]
4 years ago
10

Lena's guest house is 15 m long and 12 m wide. How long is the diagonal of the house?

Mathematics
1 answer:
Lerok [7]4 years ago
3 0
Draw dagarm (see attachment)

we've got a right triangle
the legs are 12 and 15
and the hypohuse is the diagonal


remember, for any right tirnalge
when the legs are a and b and hytponuse is c then
a²+b²=c²

so
12²+15²=c²
144+225=c²
369=c²
sqrt both sides
√369=c
3√41=c
the diagonal is 3√41 m or about 19.2m

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