If the ratio of the thickness of two such medals is 3:4 and,
the ratio of the values of them is 25:48
第一題：find the ratio of their diameter
第二題：find the diameter of the larger medal when the smaller medal's diameter is 45mm
雖然這類題目需很長的計算過程，但希望各數學大王能幫我解答並有詳細過程。
請盡快給我答案，唔該！！
更新1:
答案：a : 5:6 b : 54mm =.=唔好意思…
更新2:
第一位答錯… 唔好意思…=.=
更新3:
更正更正… 第一個答對…只是小感D野…= = 係square of diameter 超對不起！！！ 按常理是答對的，不好意思=.=
