7. A metal pipe is 77 m long. The inner diameter of a cross section is 4 cm, the outer diameter being 4.4 cm. Find its- 1. Inner curved surface area 2. Outer curved surface area. 3. Total surface area.

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A metal pipe is $77$ cm long. The inner diameter of a cross section is $4$ cm, the outer diameter being $4.4$ cm (see figure). Find its
(i) Inner curved surface area.
(ii) Outer curved surface area
(iii) Total surface area

Q. A metal pipe is

77

cm long. The inner diameter of a cross section is

4

cm, the outer diameter being

4.4

cm. Find its inner curved surface area.

Q. Question 3
A metal pipe is 77 cm long. The inner diameter of a cross-section is 4 cm, the outer diameter being 4.4 cm.

Find its,
(i) Inner curved surface area
(ii) Outer curved surface area
(iii) Total surface area.

[A s s u m e π = \frac{22}{7}]

Q. A metal pipe is

77 c m

long. The inner diameter of a cross-section is

4 c m

, the outer diameter being

4.4 c m

, then find its inner curved surface area.

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