11. The radii of two circles are 19 cm and 9 cm respectively. Find the radius and area of
circle which has its circumference equal to the sum of the circumferences of the
circles.
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11. The radii of two circles are 19 cm and 9 cm respectively. Find the radius and area of
circle which has its circumference equal to the sum of the circumferences of the
circles.
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Answer:
Area of circle=2464cm^2
Step-by-step explanation:
2×22/7×R=(2×22/7×r1)+2×22/7×r2
2×22/7×R=2×22/7(r1+r2)
R=r1+r2
R=19+9
R=28cm
Area of circle=22/7×R^2
=22/7×28×28
=22×4×28
=22×112
=2464cm^2
Answer:
Radius = 28 cm
Area = 2462 Cm2
Step-by-step explanation:
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