Question

how many square metre of copper will be required to cover a hemisphere dome 30 m is daimter​

Answer 1

Answer:

• area of hemisphere= 2πr²
• copper required = 3.14*900*2
• =56.5487

Answer 2

Answer:

1,413 sq. meter of copper is required to cover the hemisphere.

Step-by-step explanation:

Given the diameter of the hemisphere dome, d = 30m

Therefore, the radius of the hemisphere is

$r=\dfrac {d}{2} = \dfrac {30}{2}=15m$

​The curved surface area of a hemisphere is given by

$TSA= 2\pi r^{2}$

where r is the radius of the hemisphere.

Substituting the value of r, the curved surface area of the given hemisphere is

$CSA= 2\pi (15)^{2}$

$=2\times 3.14\times 225=1,413m^{2}$

Therefore, 1,413 sq. meter of copper is required to cover the hemisphere.