The diameter of conical chimneys is 80cm, and the length of bus is 50cm. To make 100 such chimneys, it is necessary at least______ M2 of iron sheet (the result retains π)

The diameter of conical chimneys is 80cm, and the length of bus is 50cm. To make 100 such chimneys, it is necessary at least______ M2 of iron sheet (the result retains π)


∵ the diameter of the bottom surface of the chimney is 80cm, the circumference of the bottom surface is 80 π cm, and the area of a chimney cap is 12 × 80 π × 50 = 2000 π cm2. To make 100 such chimney caps, iron sheet is required: 200000 π cm2 = 20 π m2

Elden Ring Premiere

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