the circumference of the circle is equal to the sum of the circumference of two circles having diameter 3/4cm and 28cm. find the radius of new circle....
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Answers
According to the question,
Circumference of Circle A = Circumference of Circle B + Circle C
Explanation:
Diameter of circle B = 3/4 cm
Radius of circle B = 3/4 ÷ 2 = 3/8 cm
Circumference of a circle = 2πr
Circumference of circle B = 2 × 22/7 × 3/8 cm
Circumference of circle B = 33/14 sq.cm
Diameter of circle C = 28 cm
Radius of circle C = 28/2 = 14 cm
Circumference of circle C = 2 × 22/7 × 14
Circumference of circle C = 88 sq.cm
Circumference of circle A = ( 33/14 + 88 ) sq.cm
Circumference of circle A = 1265/14 sq.cm
Circumference of circle A = 90.36 sq.cm (approx.)
2πr = 90.36
πr = 90.36/2 = 45.18
radius, r = 45.18 × 7/22 = 14.4 cm ( approx. )
Answer:
As the value of the radius and the circumference of the new circle is non-terminating, we take the approximate value.
The radius of the new circle is 14.4 cm.
Answer:
your answer is 14.4
Step-by-step explanation:
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