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The Sun delivers 10^3 Wm^(-2) of Electro...

The Sun delivers `10^3 Wm^(-2)` of Electromagnetic Flux on the Earth's surface. The total power that is incident on a roof of dimensions 6 m `xx` 30 m. is ........

A

`7.2 xx 10^5 W`

B

`4.5 xx 10^5 W`

C

`1.8 xx 10^5 W`

D

`0.9 xx 10^5 W`

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