A cake calls for 25 cups of sugar. If I use 225 cups of sugar, how many batches did I make?
2 answers:
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The picture in the attached figure
step 1
find the area of a square
area of a square=b²
b in this problem is the diameter of a circle
b=2*9------> b=18 units²
area of a square=18²-----> 324 units²
step 2
find the area of a circle
area of a circle=pi*r²
r=9 units
area of a circle=pi*9²------> 254.34 units²
step 3
find <span>the probability that the dart hits a point in the circle
P=area of the circle/area of the square
P=254.34/324------> P=0.785-----> 78.5%
the answer is
78.5%
</span>
step 1
find the area of a square
area of a square=b²
b in this problem is the diameter of a circle
b=2*9------> b=18 units²
area of a square=18²-----> 324 units²
step 2
find the area of a circle
area of a circle=pi*r²
r=9 units
area of a circle=pi*9²------> 254.34 units²
step 3
find <span>the probability that the dart hits a point in the circle
P=area of the circle/area of the square
P=254.34/324------> P=0.785-----> 78.5%
the answer is
78.5%
</span>
Answer:
The mass of 1000 atoms of gold is, in grams, of
Step-by-step explanation:
This question is solved by proportions, using a rule of three.
We have that:
One atom of gold has a mass, in grams, of . What is the mass of 1000 atoms of gold?
1000 atoms is . So
1 atom - grams
atoms - x
Applying cross multiplication:
The mass of 1000 atoms of gold is, in grams, of