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lazavionadams81
08.05.2020 •
Mathematics
The diagram shows a wedge in the shape of a prism.
Angle BCF is a right angle.
A string runs diagonally across the wedge
from A to F.
Calculate the length A F.
Give your answer correct to 3 significant figures
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Ответ:
11.547 cm
Step-by-step explanation:
Triangle ABC is a right triangle. BC and AB are x cm long. From Pythagorean theorem:
AC² = x² + x² = 2x²
Triangle ACF is a right triangle. CF is x cm long. From Pythagorean theorem:
20² = AC² + x²
20² = 2x² + x²
20² = 3x²
√(20²/3) = x
x = 11.547 cm
Ответ:
Yes a least i think i am
Step-by-step explanation: