3 years ago

4. Evaluate 4{28 - [10 + (3 + 1) x 2]} 0 102 40 176

Mathematics

1 answer:

Stolb23 [73]3 years ago

4 0

Answer:

40 is the answer

based on BODMAS rule

Thank you

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The surface area of the cone is 43.75pie cm^2. What is the slant height of the cone and the diameter is 5

Masteriza [31]

If the diameter of the cone is 5, then the radius of it will be half that, or 2.5, thus

$\bf \textit{total surface area of a cone}\\\\
SA=\pi r\stackrel{slant~height}{\sqrt{r^2+h^2}}+\pi r^2~~
\begin{cases}
r=radius\\
h=height\\
------\\
SA=43.75\pi \\
r=2.5
\end{cases}
\\\\\\
43.75\pi =\pi (2.5)\sqrt{r^2+h^2}+\pi (2.5)^2
\\\\\\
43.75\pi -\pi (2.5)^2=2.5\pi \sqrt{r^2+h^2}
\\\\\\
43.75\pi -6.25\pi =2.5\pi \sqrt{r^2+h^2}\implies 37.5\pi =2.5\pi \sqrt{r^2+h^2}
\\\\\\
\cfrac{37.5\pi }{2.5\pi }=\sqrt{r^2+h^2}\implies 15=\sqrt{r^2+h^2}$

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Afina-wow [57]

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Step-by-step explanation:

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Keelah's clothing store buys coats for $50 and then sells them for $80 .what is the percent of mark up on the price of the coat

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Sales tax in particular city is 6.5% what is the final cost of a $94 item?

BARSIC [14]

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Answer:191.4 cm

Step-by-step explanation:

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Diameter=circumference ➗ π

Diameter=601 ➗ 3.14

Diameter=191.4 cm

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