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3 years ago

Solve for r. 35r-21<-35r+19

Mathematics

1 answer:

Mnenie [13.5K]3 years ago

5 0

Good morning ☕️

Answer:

$r < \frac{4}{7}$

Step-by-step explanation:

35r-21 < -35r+19

⇌ 35r + 35r < 19 + 21

⇌ 70r < 40

⇌ r < 40/70

⇌ r < 4/7

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3 years ago

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Step-by-step explanation:

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Use the Volume of a Cylinder formula and the given values to find the radius of the cylinder:

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$\sf SA=2 \pi r^2 + 2 \pi r h \quad\textsf{(where r is the radius and h is the height)}$

Substitute the given value of h and the found value of r into the formula and solve for SA:

$\implies \sf SA=2 \pi \left(\sqrt{\dfrac{1715}{18 \pi}\right)^2 + 2 \pi \left(\sqrt{\dfrac{1715}{18 \pi}\right)(18)$

$\implies \sf SA=2 \pi \left(\dfrac{1715}{18 \pi} \right) + 36 \pi \left(\sqrt{\dfrac{1715}{18 \pi}\right)$

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