Schools should make mobile red flags. The mobile red flag is triangular. Its base is 30 cm and its height is 10 cm longer than its base. How much cloth does it take to make such a flowing red flag?
学校要制作流动红旗．流动红旗是三角形的．它的底是30厘米，高比底长10厘米．制作这样一面流动红旗需要多少布？
<result>0.06</result>