Yes it is correct..........................
1st step. Calculate the area of the parallelogram
We can use the following formula:
where,
base, b = 9 km
height, h = 5 km
Therefore,
The area of the parallelogram is 45 km^2
2nd step. Calculate the area of the triangle
Let's use this formula:
where,
base, b = 6 km
height, h = 3 km
Therefore,
The area of the triangle is 9 km^2
3rd step. calculates the ratio of the area of the parallelogram to the area of the triangle
Answer: the area of the parallelogram is 5 times greater than the area of the triangle.
There are 12 possible outcomes.....three of these will be a "7" ...so...
A "7" should occur 1/4 of the time
If each player pays 20p to play.....the school will take in 120 * 20 = 2400p
However.......1/4 of the players should win = 30 players.....and each lollipop costs 30p.....so......the school should spend 30 * 30 = 900p for the prizes
So......the school should raise 2400 - 900 = 1500p if 120 people play the game