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### High School Mathematics4.56 Radius of The Cylinder

 Example: A cuboid metal of dimensions 22 cm. * 8 cm. * 7 cm. was melted and cast into a cylinder of height 8 cm. what is its radius? Solution: Given that, Volume of cuboid = 28 * 8 * 7 cu. cm. Volume of cylinder (pi * r2 * h) = 22 * 8 * 7 cu. cm. Therefore, 22/7 * r2 * 8 = 22 * 8 * 7 r2 = 7 * 7 r = 7 cm. Directions: Solve the following problems. Also write at least 5 examples of your own.
 Q 1: A cuboid metal of dimensions 35cm. * 25cm. * 11cm. was melted and cast into a cylinder of height 10cm. What is its radius.17 cm.17.5 cm.17.3 cm.17.1 cm. Q 2: A cuboid metal of dimensions 44cm. * 30cm. * 15cm. was melted and cast into a cylinder of height 28cm. What is its radius.15 cm.17 cm.18 cm.16 cm. Q 3: A cuboid metal of dimensions 33cm. * 12cm. * 7cm. was melted and cast into a cylinder of height 8cm. What is its radius.11 cm.10.5 cm.10 cm.11.5 cm. Q 4: A cuboid metal of dimensions 77cm. * 49cm. * 30cm. was melted and cast into a cylinder of height 15cm. What is its radius.45 cm.47 cm.49 cm.43 cm. Question 5: This question is available to subscribers only! Question 6: This question is available to subscribers only!