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A fisherman needs 18kl of water for his fishing form from a lake which is in the form of rectangular parallelopiped (cuboid) having length 20m. After removing the water, the water level goes down by 15 cm. Find the width of the lake.(1 kl = 1m) %3D

A fisherman needs 18kl of water for his fishing form from a lake which is in the form of rectangular parallelopiped (cuboid) having length 20m. After removing the water, the water level goes down by 15 cm. Find the width of the lake.(1 kl = 1m) %3D

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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28. A fisherman needs 18kl of water for his fishing form from a lake which is in the form of rectangular parallelopiped (cuboid) having length 20m. After removing the water, the water level goes down by 15 cm. Find the width of the lake.(1 kl = 1m") (OR) For building a house, A Mason needs a cylindrical rod having volume 628 cm' and height 20 cm. Find the radius of its cross section. (7 = 3.14) 29. A farmer is having a field in the form of isosceles triangle A4BC in which AB = AC. He wants to extend his field in such away BA is produced to D. Where AD - AB. Show that ZBCD is 90".
Transcribed Image Text:28. A fisherman needs 18kl of water for his fishing form from a lake which is in the form of rectangular parallelopiped (cuboid) having length 20m. After removing the water, the water level goes down by 15 cm. Find the width of the lake.(1 kl = 1m") (OR) For building a house, A Mason needs a cylindrical rod having volume 628 cm' and height 20 cm. Find the radius of its cross section. (7 = 3.14) 29. A farmer is having a field in the form of isosceles triangle A4BC in which AB = AC. He wants to extend his field in such away BA is produced to D. Where AD - AB. Show that ZBCD is 90".
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