If there are 222 million people in the country and 67 million are under 20 what is the ratio to the total population
1 answer:
The ratio is 0.302 (30.2%)
Step-by-step explanation:
In this problem, we have:
P = 222 million is the total number of people in the country
p = 67 million is the number of people which are under 20
Here we want to find the ratio of people that are under 20 with respect to the total population. Therefore, we have to calculate the ratio
Plugging in the numbers, we find:
We can also write it in percentage,
Learn more about ratios and percentage:
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ANSWER
The slant height is 40cm.
EXPLANATION
The lateral area of a cone is given by:
where r=10cm is the radius of the circle and l is the slant height.
It was also given that, the lateral area is 400π cm²
We substitute the values to get,
We now divide both sides by 10π.
This implies that,
Hence the slant height is 40cm.