plz answer in short
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1. Circumference of the circle = 2πr
123.2= 2×22/7×r
123.2×1/2×7/22= r.
= r= 19.6cm
2.
area of circle = πr2
= 22/7×19.6×19.6
= 1207.36 cm2
New radius. = 2(radius) = 2×19.6 = 39.2 cm
New area = πr2
= 22/7×39.2×39.2
= 4829.44 cm2.
New area will be 4 times the original area.
123.2= 2×22/7×r
123.2×1/2×7/22= r.
= r= 19.6cm
2.
area of circle = πr2
= 22/7×19.6×19.6
= 1207.36 cm2
New radius. = 2(radius) = 2×19.6 = 39.2 cm
New area = πr2
= 22/7×39.2×39.2
= 4829.44 cm2.
New area will be 4 times the original area.
rajni26:
hiiii kuldeep you didn't did 'c' can u do that also
C part kra diya hai.
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4
Step-by-step explanation:
New area = 4829.44 cm2 is the answer
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