a = 17.9 meters^2
Given that:
• circumference of circle = 15 meters
T= 3.14
As we know that:
• circumference of circle = 2 nr
By putting values:
•15 = 2 (3.14) r
By simplifying:
• 15=6.28r
Dividing both sides by 6.28 we get:
• r= 2.39 meters
Now for finding area:
• Area = 1 r2
Putting values:
• Area = (3.14) (2.39)*2
By simplifying we get:
• Area = 17 .935 meters’2
So by rounding off radius to nearest tenth:
• radius =r=2.4 meters
Rounding off area to nearest tenth:
• area =a = 17.9 meters’2
Have a beautiful and joyful day ahead.
Answer:
X=0,6 for the first
X= 1+or-i/~29/5
Step-by-step explanation:
So... the alloy with 5% titanium is ...some alloy :), so is a mixed metal and among its mix it has 5% of titanium, it has other metals, but only 5% is titanium.
that means that if the amount of it is say "x", then the amount of titanium in it will be 5% or (5/100) * x, or
0.05x.
now, the 25% titanium, is the same issue, if say a quantity of "y" will only have 25% of titanium, regardless of other metals, so in "y" there is 25% or (25/100) * y, or
0.25y.
so, we need a mixture that yields only a 13% alloy, or 13/100, and will be 100 grams, so the amount of titanium in it will then be (13/100) * 100 or 13.
how much of the 25% alloy will be needed? well, y = 100 - x.