Question

In a cylindrical pipe the area of the surface are given . Find the radius and height of the cylinder ? ​

Answer 1

Answer:

Your answer :

→ let the radius & height be r & h units

Curved surface area = 2πrh

$880 = \frac{2 \times 22 \times rh}{7} \\ \\ 880 \times 7 = 2 \times 22 \times rh \\ \\ rh = \frac{880 \times 7}{2 \times 22} = 20 \times 7 = 140$

Area of circular top = 154

πr² = 154

$\frac{22}{7} \times {r}^{2} = 154 \\ \\ {r}^{2} = \: \frac{154 \times 7}{22} = 7 \times 7 \\ \\ r = 7$

rh = 140

7rh = 140

$h \: = \: \frac{140}{7} = 20$

Radius of the cylinder = 7 units

Height of the cylinder = 20 units

Step-by-step explanation:

i hope it helps :)

Answer 2

Step-by-step explanation:

In a cylindrical pipe the area of the surface are given . Find the radius and height of the cylinder ?