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The length of radius of a right circular...

The length of radius of a right circular cylinder is decreased by 50% and height is increased by 50%. How much percent of the volume will be changed?

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UNITED BOOK HOUSE-TAMLUK HAMILTON HIGH SCHOOL-EXERCISE
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  2. If tan50^@=x and cot(theta+5^@)=1, then find the value of sec(90^@-the...

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