A wooden plank is in the shape of cubiod,with dimensions 25cm×10cm×5cm.On the top of it three conical holes each of radius 2.5cm and depth 5cm are made.Find the volume of the remaining wooden plank.(Take π=3.14)
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Answer: 1151.87cm³__
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Answer:
Volume of wodden plank= vol of cuboid - 3 (vol of cone)
= LxBxH - 3 ( 1/3 x 3.14 x r x r x h )
Step-by-step explanation:
radius of cone = 2.5 cm.
height of cone = 5cm.
dimensions of cuboid = 25cm x 10cm x 5cm.
volume = 25 x 10 x 5 - 3(1/3 x 3.14 x 2.5 x 2.5 x 5) cm3
= 1250 - (98.215) cm3
= 1151.78 cm3
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