Math, asked by rbahadurb71gmailcom, 11 months ago

Find the circumference of a circle whose area is
4 times the area of a circle with diameter 21 cm.

Answers

Answered by warrior24

2

Answer:

area of circle with 21cm = πr² = 22/7 × 10.5 × 10.5

= 346.5

area of circle = 4 × 346.5 = 1386 cm²

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