A rectangular book measures 18 x 9. What is the length of its diagonal?
2 answers:
A^2 + b^2 = c^2
18^2 + 9^2 =
324 + 81 = c^2
405 = c^2
take the sq root
= around 21.12
Answer:
20.1246118 or 20.12
Step-by-step explanation:
First draw the box with the diagonal, as you can see it is split into 2 equal right triangles.
Now use the pythagorean theorem (a^2+b^2=c^2) to find the length of the diagonal
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