수학동아 - 폴리매스

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함께 풀고 싶은 문제

창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.

[창의 퍼즐] [그래프]그래프를 크게 그리면? 난이도:상

khr519 2020.07.06 21:53 조회 679

문제 푼 사람 0명

페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

어떤 원그래프a가 있다

항목b는 a의 넓이의 20%이다

b의 넓이가 31.4cm^2(제곱센티미터) 일때

a의 반지름을 10cm늘리면

b의 넓이는 얼마가 되는가?

(소수 셋째자리까지 반올림해서 나타내시오)

(식도 써주시오)

이전글 분수문제2

다음글 [경로 찾기] 경로 찾기(소문제 겁나 많음 주의)

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어려워요

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