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Scrat [10]
2 years ago
5

Can someone help me with this

Mathematics
1 answer:
Alexxandr [17]2 years ago
5 0

Answer:

B

Step-by-step explanation:

the perimeter (P) of a rectangle is calculated as

P = 2l + 2w ( l is the length and w the width ) , then

P = 2(3\sqrt{15} ) + 2(\sqrt{15} ) ← distribute both parenthesis )

   = 6\sqrt{15} + 2\sqrt{15}

   = 8\sqrt{15}

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<h3>Solving trianngles using the laws of sines & cosines </h3>

The law of sines is written as

\frac{sinA}{a}=\frac{sinB}{b}= \frac{sinC}{c}

Where a,b, and c are sides of any given triangle and A,B, and C are the angles.

This law is used when we are given either

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The law of cosines is written as

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c² = a² + b² -2ab cosC

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This law is used when we are given either

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Learn more on Solving triangles using the laws of sines & cosines here: brainly.com/question/22339733

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