Subject
Bank Exam
Topic
Bangladesh Bank (AD) - 12.11.2021
A sector of a circle of radius 5 cm is recast into a right circular cone of height 4 cm. What is the volume of the resulting cone?
A sector of a circle of radius 5 cm is recast into a right circular cone of height 4 cm. What is the volume of the resulting cone?
ক)
4π cm3খ)
12π cm3গ)
32π cm3ঘ)
33π cm3Explanation
এখানে, r 2 = (5 2 - 4 2 ) r = √(5 2 - 4 2 ) = 3 সুতরাং কোণকের আয়তন = 1/3∏r 2 h = 1/3Π × 3 2 × 4 = 12Π cm 3Related questions
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