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Ipatiy [6.2K]
3 years ago
5

Help anyone can help me do this question,I will mark brainlest.​

Mathematics
1 answer:
FrozenT [24]3 years ago
3 0

Answer:

3) 16π cm²

4) 240.625 cm²

Step-by-step explanation:

<em>3. For this problem I'm going to use the formula Area = π × r²</em>

<em>To start off, I'm going to input our value of radius which is 4cm.</em>

π × 4²

<em>Finally, I'm going to square our value "4"</em>

16π cm²

<em>(I'm going to "leave my answer in terms of π" as the problem states but if you need the complete answer it would be </em>about 50.24 cm²

<em>4. For this problem I'm going to use the formula Area = π × (d/2)²</em>

<em>To begin, I will divide our diameter by 2 to find the radius.</em>

17.5/2 = 8.75

<em>Next, we are going to square our now, radius.</em>

8.75² = 76.5625

<em>Now, we have to multiply our squared radius by π (in this problem it states to use 22/7, so that's what we'll do :)</em>

76.5625 × 22/7 = 240.625 cm²

<em>So! This is our final answer!</em>

<em />

Hope this Helps! :)

<em>Have any questions? Ask below in the comments and I will try my best to answer. </em>

-SGO

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