In a small city, 18% of the people are voters. If there are 5400 voters, then what is the population in that city?

Mathematics

1 answer:

Aleonysh [2.5K]3 years ago

8 0

Answer:

$30,000\ people$

Step-by-step explanation:

Let

x-----> the population of the city

we know that

using proportion

$\frac{5,400}{18\%}=\frac{x}{100\%}\\ \\x=5,400*100/18\\ \\x=30,000\ people$

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The composite figure is made up of a triangular prism and a pyramid. The two solids have congruent bases.

kolezko [41]

The correct question is
The composite figure is made up of a triangular prism and a pyramid. The two solids have congruent bases. What is the volume of the composite figure?

the complete question in the attached figure

we know that
[volume of a cone]=[area of the base]*h/3
[area of the base]=22*10/2-------> 110 units²
h=19.5 units
[volume of a cone]=[110]*19.5/3------> 715 units³

[volume of a triangular prism]=[area of the base]*h
[area of the base]=110 units²
h=25 units
[volume of a a triangular prism]=[110]*25------------> 2750 units³

[volume of a the composite figure]=[volume of a cone]+[volume of a a triangular prism]

[volume of a the composite figure]=[715]+[2750]-------> 3465 units³

the answer is
The volume of a the composite figure is 3465 units³