Question

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 Fig. 13.11). Find its
0 inner curved surface area
(m) outer curved surface area,
(iii) total surface area.
Fig.​

Answer 1

Answer:

convert diameter into radius by dividing it by 2

r=2

then convert the outer diameter

r=2.2

h=7cm

shape of pipe is cylendar

use the formula 2pi x r x h for both inner and outer

put the value and then add the areas to get total area

Step-by-step explanation:

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