Question

8. The inner and outer walls of a 30 cm long
pipe have a diameter of 15 cm and 17 cm,
respectively. Find the volume of the
material used in the pipe (use n = 3.14).​

Answer 1

Answer:

Answer: The inner and outer walls of a 30 cm long pipe have a diameter of 15 cm and 17 cm, respectively. Find the volume of the material used in the pipe (use I = 3.14). The answer is not 1519.4.

Step-by-step explanation:

refer the image

Answer 2

Answer:

$\huge{\bf{\underline{\red{Answer :}}}}$

$\Large{\underline{\underline{\bf{Question:-}}}}$

The inner and outer walls of a 30 cm long

pipe have a diameter of 15 cm and 17 cm,

respectively. Find the volume of the

material used in the pipe (use n = 3.14).

_________________________________

• Formula For calculating of cyclinder is π²h.

$\Rightarrow$outer r - inner r

$\Rightarrow$πh. Outer² - innerR²

$\large\frac{22}{7} \times 30 \times 8.5² - 7.5²$

$\large= \frac{22}{7} \times 30 \times 16.03$

= 22 × 30 × 2.29

$\boxed{\red{1519.4}}$