Question

please solve this problem ...​

Answer 1

✰ Qᴜᴇsᴛɪᴏɴ :-

An iron pipe is 21 cm long and it's exterior diameter is 8 cm. If the thickness of the pipe is 1 cm and iron weighs 8g/cm³. Find the weight of the pipe.

✿ Gɪᴠᴇɴ :-

• Length of iron pipe = 21cm
• Exterior diameter of the pipe = 8cm
• Thickness of the pipe = 1cm
• Iron weighs = 8g/cm³

☯ Tᴏ Fɪɴᴅ :-

• Weight of the pipe

☛ Sᴏʟᴜᴛɪᴏɴ :-

• The external radius of the pipe = 4cm

• The internal radius of the pipe = (4 - 1) = 3cm

The external volume :

➳ [ 22/7 × 4 × 4 × 21 ] cm³

➳ 1056 cm³

The internal volume :

➠ [ 22/7 × 3 × 3 × 21 ] cm³

➠ 594 cm³

The volume of the metal = external volume - internal volume

➔ (1056 - 594) cm ³

➔ 462cm³

The weight of the pipe :

➦ (462 × 8) g

➦ 462×8/1000 kg

➦ 3.696 kg

⛬ Weight of the pipe is 3.696 kg