He has 11 hours of daylight each day. Each solar panel has an area of 3 m2. 800 Watts of sunlight hit each 1 m2 of solar panel every hour. However, the solar panels are only 14.5% efficient, which means they can only absorb 14.5% of the 800 watts. He needs 20,000 Watts of stored energy to fully charge the rover battery. How many solar panels will he need to bring on the trip to be able to fully charge an empty rover battery ?

Step-by-step explanation:

answer:

total cost for tiles and paints is $924.  

step-by-step explanation:

we have been given that a community hall is in the shape of a cuboid. the hall is 40m long 15m high and 3m wide.

the paint will be required for 4 walls and ceiling.

let us find area of walls and ceiling.

therefore, the area of walls and ceiling is 1410 square meters.

given: cost for 10 litre of paint is $10 and 10 litre paint covers 25 square meter. therefore,

therefore, the total painting cost is $564.

tiles will be required for floor. let us find the area of floor.

given: 1m squared floor tiles costs $3. so,

therefore, the total tiles cost is $360.

now let us find combined total cost of tiles and paint.

therefore, the combined total cost of tiles and paint is $924.