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Zepler [3.9K]
3 years ago
5

Need help ASAP! This is pretty urgent! Will mark brainliest!! please help if you can

Mathematics
1 answer:
Yuri [45]3 years ago
7 0

Answer:

153.938 sq in.

Step-by-step explanation:

7 x 7 = 49

49 x pi = 153.938

pi = 3.14

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\bf tan(\theta )=\cfrac{y}{x}\implies tan(\theta )=\cfrac{y}{15}\implies tan(\theta )=\cfrac{1}{15}\cdot y&#10;\\\\\\&#10;\stackrel{chain~rule}{sec^2(\theta )\cfrac{d\theta }{dt}}=\cfrac{1}{15}\cdot \cfrac{dy}{dt}\implies \cfrac{1}{cos^2(\theta )}\cdot\cfrac{d\theta }{dt}=\cfrac{1}{15}\cdot \cfrac{dy}{dt}&#10;\\\\\\&#10;\boxed{\cfrac{d\theta }{dt}=\cfrac{cos^2(\theta )\frac{dy}{dt}}{15}}\\\\&#10;-------------------------------\\\\&#10;

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3 years ago
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