Question

Can someone answer it??????
A pen stand made up of wood is in the shape of a cuboid with four conical depressions and a cubical depression to hold the pens and pins, respectively the dimensions of cuboid are 10cm , 5cm ,4 cm. the radius of each of the conical depression is 0.5cm and the depth is 2.1cm . The edge of the cubical depression is 3cm.Find the volume of the wood in entire stand

Answer 1

Volume of cuboid =lbh=10×5×4=200 cm³
Volume of each depression =⅓pi r²h
⅓×22/7×(0.5)²×2.1
⅓×22/7×1/4×21/10
11×1/4×1/5
Volume of 4 depressions=4×11×1/4×1/5
=11/5=2.2cm³

Volume of pen holder=200-2.2
=197.8 cm³

Answer 2

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