Mathematics · Mensuration

A ring-shaped disc has outer radius 8 cm and inner radius 6 cm. What is the ratio of the ring's area to the area of the whole outer circle?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

11 : 4
22 : 5
37 : 16✓
43 : 8

Correct answer

7 : 16

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A ring-shaped disc has outer radius 8 cm and inner radius 6 cm. What is the ratio of the ring's area to the area of the whole outer circle?

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A ring-shaped disc has outer radius 8 cm and inner radius 6 cm. What is the ratio of the ring's area to the area of the whole outer circle?

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