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Solve this faster with the right shortcut first
Shortcut used: Reduce the ratio first, then scale both terms by the same multiplier.
Solve in 3 steps:
- Write the ratio clearly.
- Find the common multiplier.
- Apply it to the missing term.
Common mistake: Do not scale only one side of the ratio.
Question 5
Multiple Choice Question
Question
Find the volume of a cone with radius 3 cm and height 7 cm. Use π = 22/7.
Explanation
Correct Answer: C
ANSWER
Correct Answer: C
Method / Topic: Mensuration
The volume is 66 cm³.
Why this answer is correct
The answer keeps the ratio proportional.
Short Explanation
The volume is 66 cm³.
Detailed Explanation
Question
Find the volume of a cone with radius 3 cm and height 7 cm. Use π = 22/7.
ANSWER
Correct Answer: C
Method / Topic: Mensuration
Volume of a cone = 1/3πr²h = 1/3×22/7×3²×7 = 66 cm³.
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Question 5
Learn + Solve: Shortcut, Trap & Fast Route Click to view shortcut, steps, and common mistake
Learn + solve
Shortcut used, common trap, and the fastest solving route
Shortcut used: Reduce the ratio first, then scale both terms by the same multiplier.
Solve in 3 steps:
- Write the ratio clearly.
- Find the common multiplier.
- Apply it to the missing term.
Common mistake: Do not scale only one side of the ratio.
Question
Find the volume of a cone with radius 3 cm and height 7 cm. Use π = 22/7.
Explanation
Correct Answer: C
ANSWER
Correct Answer: C
Method / Topic: Mensuration
The volume is 66 cm³.
Why this answer is correct
The answer keeps the ratio proportional.
Short Explanation
The volume is 66 cm³.
Detailed Explanation
Question
Find the volume of a cone with radius 3 cm and height 7 cm. Use π = 22/7.
ANSWER
Correct Answer: C
Method / Topic: Mensuration
Volume of a cone = 1/3πr²h = 1/3×22/7×3²×7 = 66 cm³.
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