Question

A rectangle paper of which 14cm rolled alone its width and a cylinder of radius 20 cm is formed. Find the volume of the cylinder . ( Take 22÷7 for pai

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Answer 1

ɢɪᴠᴇɴ :-

• Length of rectangle = height of cylinder = 14cm
• Radius of cylinder = 20 cm

ᴛᴏ ꜰɪɴᴅ :-

• Volume of cylinder

ꜱᴏʟᴜᴛɪᴏɴ :-

✪ As we know that ✪

➪ Volume of cylinder

➪ πr²h

➪ 22/7 × (20)² × 14

➪ 22 × 400 × 2

➪ 44 × 400

➪ 17600cm³

Hence,

• Volume of cylinder is 17600cm³

Extra Information :-

• Volume of cylinder = πr²h
• T.S.A of cylinder = 2πrh + 2πr²
• Volume of cone = ⅓ πr²h
• C.S.A of cone = πrl
• T.S.A of cone = πrl + πr²
• Volume of cuboid = l × b × h
• C.S.A of cuboid = 2(l + b)h
• T.S.A of cuboid = 2(lb + bh + lh)
• C.S.A of cube = 4a²
• T.S.A of cube = 6a²
• Volume of cube = a³
• Volume of sphere = 4/3πr³
• Surface area of sphere = 4πr²
• Volume of hemisphere = ⅔ πr³
• C.S.A of hemisphere = 2πr²
• T.S.A of hemisphere = 3πr²

Answer 2

✔ Given :-

• Radius Of Cylinder = 20cm.

• Height Of Cylinder(Length Of Rectangle) = 14cm.

✔ To Find :-

• Volume Of Cylinder.

✔ Solution :-

We know that,

Volume Of Cylinder = πr²h.

Here,

r = Radius,

h = Height.

Put the values.

➨ 22/7 × 20 × 14.

➨ 22 × 400 × 2.

➨ 22 × 800.

➨ 17600m³

Hence, The Volume Of Cylinder = 17600m³.