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21 votes
What is the perimeter of the square if it’s diagonal is 5?

User Sologoub
by
6.1k points

2 Answers

5 votes

Answer:

About 14

Explanation:

The diagonal BD is the hypotenuse of the triangol ΔBCD. You can find the lenght of the side BC (BC = BD × cos α = 5 × cos 45° = 3.54) or the lenght of the side CD (CD = BD × sin α = 5 × sin 45° = 3.54). Now you can multiply 3.54 by four to find the perimeter (P = 3.54 × 4 = 14.16).

Answer: 14.16 (I don't know the unit of measurement).

I hope I helped you :D

What is the perimeter of the square if it’s diagonal is 5?-example-1
User LeSam
by
6.4k points
6 votes

Answer:

P≈14.14

Explanation:

Diagonal

5

Using the formulas

P=4a

d=2a

Solving forP

P=22d=2·2·5≈14.14214

User JochemQuery
by
6.8k points
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