So, the area of a circle is a=pi r^2
so do that and get a=pi(4)
and since the circle touches the edge of the rectangle, the rectangle is 4 cm tall, so 4*8 is 32 and pi(4) is about 12.56, so 32-12.56 is 19.44, and I believe that is the answer. (19.4)
12960 seconds equals 3.6 hours.
since its 3.6 hours we need to calculate it so one minute = 60 seconds and 60 minutes = a hour so those are the basics to solve this. now u have add 1 minute of 60 minutes to equal just one hour which gets u 3 if u do it 3 times.
It all depends on the importance of the variable its self. Its important to solve it so you know what the variable is and its important to solve one at a time because its impossible to solve a variable completely if you have two of them
Step-by-step explanation:
Comparing Rational Numbers:
1/7 , 3/9 , 0.2
0.142857... , 0.333333... , 0.2
a= 1/7
b= 0.2
c= 3/9
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One minute is sixty seconds.
So we can do 6 times 60 and the answer comes out to 360. It took him 360 seconds to complete the puzzle.