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Prism with lateral surface area and height given: perimeter of the base

The same question, asked 2 times: 15 Sep 2025 S2*, 23 Sep 2025 S3. Every wording below, oldest first.

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  1. Question 1

    15 Sep 2025 S2

    69
    If the lateral surface area of a prism is 240 cm2\text{cm}^2 and height is 8 cm, what is the perimeter of the base?

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  2. Question 2

    23 Sep 2025 S3

    64
    A prism with a parallelogram base has base area 80 cm2\text{cm}^2 and height 12 cm. If its lateral surface area is 384 cm2\text{cm}^2, what is the perimeter of the base?

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