Question

if each edge of a cube is doubled. how many times the will it's volume increase?​

Answer 1

Solution:-

Let the original side of the cube be x cm and v¹= volume of the cube= x³cm³

So when the sides are getting doubled, each side of the cube will become (2x) cm.

Let the v²= volume of new cube=

(2x)³ cm³

8x³ cm³

Thus, we have v²/v¹= 8x³/x³= 8 ➽ v²= 8 × v¹

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Therefore, the new volume is 8 times the original volume.

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Some important formulae:

• Lateral surface area (LSA) of cube= 4s²
• Total surface area (TSA) of cube= 6l²
• Volume of cuboid= l×b×h
• Volume of cylinder= πr²×h
• Total surface area (TSA) of cylinder= 2πrh+2πr²
• Curved surface area (CSA) of a cylinder= 2πr×h

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Answer 2

Answer:

I hope it is helpful to you

particle start motion from rest according to formula θ=(t4/60)- (t/4). Then the angular velocity and angular acceleration at time t=10s.