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แบบฝกหัดที่ 2

1. จงหาปริมาตร และพื้นที่ผิวทั้งหมดของทรงกระบอกสูง 10 เซนติเมตร มีเสนผานศูนยกลาง 14
เซนติเมตร

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2. จงหาปริมาตรของทรงกระบอกใบหนึ่งทมีรัศมีของฐาน 3.5 นิ้ว และสูง 5 นิ้ว
ี่
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3. จงหาปริมาตรและพื้นที่ผิวทั้งหมดของถังเก็บน้ํารูปทรงกระบอกใบหนึ่งที่มีรัศมีที่ฐาน 3 เมตร
สูง 4 เมตร 90 เซนติเมตร

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