Mathematics, 07.04.2020 22:31 cache77

What do I do to find the surface area of a cylinder ?

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Answer from: quickestlearner5694

471.24 square cm.

Step-by-step explanation: First find the area of one circular base by using the formula $\pi r^2$ . The radius is 5, so first square that. 5^2=25. Now multiply by pi, using 3.14 for pi. 25*3.14=78.5.

Since there are 2 circular bases, multiply the area of one base by 2. 78.5*2=157.

Now to find the surface area of the rest of it, first find the circumference of one circular base by using the formula $\pi d$ . The diameter is the radius multiplied by 2. 5*2=10. Now multiply by pi. 10*3.14=31.4. Now multiply this by the height of the cylinder. 31.4*10=314.

Finally add up the areas of the two circular bases and the area of the rest of the cylinder. 314+157=471.

Assuming that an expanded form of pi was used by using the π button on a calculator, this answer is closest to 471.24.

Answer from: Quest

ratios represent a pattern or relationship that can be scaled.

equivalent ratios are pairs of ratios that represent the same relationship between quantities, and can be generated by multiplying or dividing both quantities in the ratio by the same factor.

in this lesson, students will use double number lines and ratio reasoning to solve ratio problems. by partitioning double number lines into proportionate intervals, students will build an understanding of equivalent ratio relationships as those that are generated by multiplying or dividing two related quantities by the same number. this lesson will build upon students' prior understanding of multiplicative comparisons, number line reasoning and equivalent fractions (while highlighting the difference between equivalent fractions and equivalent ratios); and will build toward future work in this unit on building ratio tables, and work in future grades in proportionality, scaling, and expressing and graphing linear functions.

step-by-step explanation:

ratios represent a pattern or relationship that can be scaled.

equivalent ratios are pairs of ratios that represent the same relationship between quantities, and can be generated by multiplying or dividing both quantities in the ratio by the same factor.

Answer from: Quest

step-by-step explanation:

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