23.What is the approximate circumference of a circle with a radius of 6 cmA.12cm
B.18cm
C.24cm
D.36cm
D
24.What is the length of the diameter of a circle with a 15 radius
A.5
B.15
C.30
D.45
C
Right.
To find the circumference of a circle, you can use the formula C = 2πr, where C represents the circumference and r represents the radius.
For question 23:
Given a radius of 6 cm, substitute the value of r into the formula:
C = 2π(6)
C ≈ 2 * 3.14 * 6
C ≈ 37.68 cm
The approximate circumference of a circle with a radius of 6 cm is 37.68 cm.
Now, let's move on to question 24:
To find the diameter of a circle, you can use the formula D = 2r, where D represents the diameter and r represents the radius.
Given a radius of 15 cm, substitute the value of r into the formula:
D = 2(15)
D = 30 cm
The length of the diameter of a circle with a radius of 15 cm is 30 cm.
So, the correct answer to question 23 is (D) 36 cm, and the correct answer to question 24 is (C) 30 cm.