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quester [9]
3 years ago
8

. A contractor is cutting wood to brace the side of a

Mathematics
1 answer:
lubasha [3.4K]3 years ago
4 0
Split into two right angled triangles
label your sides a, b and c
C always has to be the hypotenuse in a right angled triangle
it doesn’t matter which is a/which is b
a^2+b^2=c^2
we know B and C
A^2= C^2-B^2
C=25
B=15
25^2-15^2=20^2
base=20feet
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