The area covered by a transmitting antenna of height `50 m` is `alpha pi (km)^(2) .` Find `alpha`. (Radius of earth `=6400 km` )

An antenna is of height 500 m . What will be its range in km? (Radius of the earth is. 6400 km )

The distance of coverage of a transmitting antenna is 12 . 8 km . Then the height of the antenna is (Given that redius of earth = 6400 km)

If a transmitting antenna of height 105 m is placed on a hill, then its coverage area is

A TV transmitting antenna is 125 m tall. How much service area this transmitting antenna cover, if the receiving antenna is at the ground level? Radius of earth = 6400 km .

For VHF signal broadcasting "______________" km^(2) of maximum service area will be covered by an antenna tower of height 30m, if the receiving antenna is placed at ground. Let radius of the earth be 6400 km. (Round off to the Neareest Integer ) ( Take pi as 3.14 )

A TV transmission tower antenna is at a height of 20m. The percentage increase in area covered in case if the receiving antenna is at ground level to that at a height of 25 m is (Radius of earth =6.4xx10^(6)m )

What will be the area of reception of the signals transmitted by the TV antenna of length 300 m and radius of earth is 6400 km ?

A transmitting antenna of height 25 m is fitted at the top of a tower of height 20m. What is the height of the receiving antenna from ground level if the maximum distance between transmitting antenna and receiving antenna on ground is 56 km. Radius of earth = 6400 km.

What should be the height of transmitting antenna if the T.V. telecast is to cover of a radius of 128 km ? Radius of earth = 6.4 xx 10^(6) m .

Find out the capacitance of the earth ? (Radius of the earth = 6400 km)