Question

6. A dice is thrown once. Find the probability of getting a prime numb
7 Gind the area of circle whose circumference is 22cm.​

Answer 1

Answer:

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6. A dice is thrown once. Find the probability of getting a prime number

• We can see from the above steps that the number of favourable outcomes where we get a prime number is 3 and the total number of possible outcomes i.e. the number of elements in the sample space is 6. Hence, the probability of getting a prime number is 12. This is our final answer.

7. Fnd the area of circle whose circumference is 22cm.

• Given parameters
• Circumference of the circle (C) = 22 cm

• Let us consider the radius of the circle be = r
• Radius (r) = C/2π
• r = \frac{22}{2\times \frac{22}{7}} r = \frac{7}{2}
• r = 3.5
• The radius of the given circle is 3.5 cm.
• Area of circle (A) =πr2
• A = 22/7 × 3.5 × 3.5
• A = 269.5/7
• A = 38.5 cm2

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