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3 years ago

Will someone please help me here

Mathematics

1 answer:

grandymaker [24]3 years ago

7 0

$\bf a) \\\\\\ \begin{array}{ccll} miles&minutes\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 11&74\\ 1&x \end{array}\implies \cfrac{11}{1}=\cfrac{74}{x}\implies x=\cfrac{1\cdot 74}{11} \\\\\\ b) \\\\\\ \begin{array}{ccll} lbs&\$\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 20&8\\ 1&x \end{array}\implies \cfrac{20}{1}=\cfrac{8}{x}\implies x=\cfrac{1\cdot 8}{20}$

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WARRIOR [948]

Answer:

False

Step-by-step explanation:

The surface area of the cone is

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$SA=\pi r^2 +2\pi\times r^2$

$SA=3\pi r^2$

The surface area of the cylinder is:

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$SA=2\pi r^2 +2\pi\times r\times r$

$SA=4\pi r^2$

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Step-by-step explanation:

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