MA.7.GR.2.1 · Geometric Reasoning
Students find the surface area of a right circular cylinder using the figure’s net. Unrolling the cylinder shows two circles and one rectangle whose length is the circumference of the circle, which is where the lateral area comes from. The formula is provided rather than memorized.
The FAST shows a net or a labeled cylinder and asks for the total surface area in the equation editor. Two errors dominate: forgetting one of the two circular bases, and using the radius instead of the circumference for the length of the rectangle.
These come straight from Algebro's 7th grade question bank, easiest first. Answer one, check it, then move to the next.
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Select every answer that applies, then check.
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Correct answer: B, D, E (highlighted above)
Pick one match in each row, then check.
| m² | m² | m² | m² | |
|---|---|---|---|---|
| r = 5, h = 3 | ||||
| r = 2, h = 4 | ||||
| r = 4, h = 8 | ||||
| r = 3, h = 6 |
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Correct answer: shown by the green boxes above
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Enter the number only. Do not include units like $, %, or ft²
Showcase extra: the real practice and quiz players do not have this button.
Correct answer:
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Showcase extra: the real practice and quiz players do not have this button.
Correct answer: C. m²
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Showcase extra: the real practice and quiz players do not have this button.
Correct answer: C. The student used instead of for the combined area of the two circles.
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