A cone-shaped paper cup has a circular opening of radius cm and a vertical height of cm. What is its slant height?
Answer and explanation
Correct answer: A. 5 cm
- Step 1: The slant height is the hypotenuse of a right-angled triangle with sides cm (radius) and cm (height).
- Step 2: cm.
Answer
5 cm.
Why not the others: 7 cm: This adds the radius and the height instead of using Pythagoras. 3.5 cm: This averages the two lengths. 1 cm: This subtracts the lengths .
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