3*boys=2*18
3*boys=36
boys=12
12+18=30
total number of students: 30
Solve using fractional law exponent rule
2 answers:
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Answer:
Step-by-step explanation:
If you had a solid cylinder, in order to find the amount of material that makes up that solid cylinder, you would find the volume using the radius of 4 (half of the diameter 8). BUT we want to know the volume of the solid with the radius of 4 minus the solid that has a radius of 2.5 (half of the diameter 5).
That's volume outer - volume inner. To find the outer volume:
so
and
and do the same for the inner volume:
and
Subtract the inner from the outer:
If you need your answer in decimal form, then the volume is
9189.16 cm³
Answer:
Step-by-step explanation:
The area of the circle is
The area of the triangle is
Hence, the probability of a randomly selected point within the circle falls in the red shaded area is