Step-by-step explanation:
What is 80% of 60?
To get the answer,
First, convert the percentage to decimal form. How? Change the percent sign to decimal point. Then, move the decimal point two (2) places towards the left side of 80. It looks like this:
decimal point moves two places to the left
Therefore, 80% is equal to 80 .
Then, let's solve!
Multiply 60 by 0.80 to get the answer.
60x0.80=48
From here, we get to know that the 80% of 60 is 48.
Consider triangle WBG, where points W, B and G represent Weather Station, Balloon and Ground, respectively. This triangle is right with right angle at vertex G. The legs of this triangle are GB and GW, the hypotenuse is BW.
From the question you know that GB=4 km and GW=1 km. By the Pythagorean theorem,
Answer: nearly 4.123 km