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Juli2301 [7.4K]
4 years ago
10

Find the surface area

Mathematics
1 answer:
TEA [102]4 years ago
5 0

Answer:

401.92

Step-by-step explanation:

Bases: 2(4^2 π)=32π

Curved Surface: 12*(2*4π)=96π

96π+32π=128π=128(3.14)≈401.92

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Step-by-step Explanation:

Let "p" be the height of the flag pole.

The ratio of the child height to the pole height is the same as the ratios of their respective shadows, so,

\frac{1.4}{p} =  \frac{1.2}{7.5}

Now, Cross multiply :-

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→ p =  \frac{10.5}{1.2}

→ p = 8.75

This 8.75 can be rounded off to 9 as it ends with .75

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3 years ago
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