Answer:
No of white balls = 5
Step-by-step explanation:
Given that,
Total no of red balls = 4
Total no of green balls = 6
The probability of not drawing a white ball in one draw be,
We need to find the number of white balls. Let there are x balls.
The probability of drawing a white ball = 1 - the probability of not drawing a white ball
= 1 -2/3
= 1/3
Using the formula for solving probability of having a white ball.
Hence, there are 5 white balls.
The circumference of the circle will be 27.34 cm.
Given Diameter of the glass lens is 8.7 cm.
<h3 /><h3>What is the circumference of the circle?</h3>Given Diameter of the glass lens D = 8.7 cm
The circumference of circle is given by = πD
where , π = constant
D= Diameter
putting the value of D in the above formula of circumference
The circumference of circle is given by = πD
The circumference of circle is given by = π
The circumference of circle is given by = 27.37 cm (π=3.14)
Hence the circumference of the circle will be 27.34 cm.
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