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Tems11 [23]
3 years ago
10

Ela

Mathematics
1 answer:
77julia77 [94]3 years ago
4 0

Answer: 3 × 10⁴ miles²

Step-by-step explanation:

Given that:

Estimated Surface area of Lake = 30,000 square miles

Expressing the estimated area as a whole number multiplied by a power of ten

Hence, we are required to express the surface area in standard form:

30,000 miles ² in standard format:

30,000 is equivalent to (3 × 10,000)

3 is a whole number

10,000 = (10 * 10 * 10 * 10)= 4 th power of 10

10,000 = (10 * 10 * 10 * 10) = 10⁴

Hence,

3 × (10 * 10 * 10 * 10) = 3 × 10⁴ miles²

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Can somebody please help me with this question
drek231 [11]

Answer:

(3^2) - n

Step-by-step explanation:

For this problem we will take it step by step to build the expression:

raise 3 to the 2nd power

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then find the difference of the result and n

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Hence, your final expression should be (3^2) - n.

Cheers.

7 0
3 years ago
the lateral area of a cone is 574 pi cm2. The radius is 19.6 cm. What is the slant height to the nearest tenth of a centimeter?
bulgar [2K]
\bf \textit{lateral area of a cone}\\\\
LA=\pi r\sqrt{r^2+h^2}~~
\begin{cases}
r=radius\\
\sqrt{r^2+h^2}=slant~height\\
-----------\\
LA=574\pi \\
r=19.6
\end{cases}
\\\\\\
574\pi =\pi (19.6)\sqrt{r^2+h^2}\implies \cfrac{574\pi }{19.6\pi }=\sqrt{r^2+h^2}
\\\\\\
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