The perimeter of a rectangle is 72m. What are its dimensions that yield the maximum area?
人气:125 ℃ 时间:2020-02-03 09:38:22
解答
矩形周长为72cm,当长为多少时面积最大?
当其为正方形时,即 长=宽=18cm时 Smax=18*18=324cm(平方厘米)如果用导数方法,那要怎麼做?用导数。饶了我吧。早就还给老师喽。呵呵anyway,你还是解答得很好
推荐
- If the perimeter of a rectangle is 40cm ang its length is x cm ,then the width is what?
- A rectangle is 6 cm long.If the perimeter of the rectangle is 28 cm,find the width of the rectangle
- If the perimeter of a square is 72/m,use 5/8 of its perimeter,what's the rest meter?
- The area of a rectangle is 60 cm2.The length of the rectangle is 12 cm.Determine the perimeter of
- If the perimeter of a square is 7/2m,use5/8 of its perimeter,what's the rest number?
- 甲、乙两车分别从东、西两城同时出发,甲车从东城开往西城,乙车从西城开往东城,40分钟后相遇,甲继行驶25分钟后到达西城,已知乙车每分行驶2.5千,东、西两城相距多少千米
- 水果店进了一批水果,其中梨的重量是葡萄的三倍,每天卖出25千克葡萄和60千克梨.(后面补充)
- i have noneed to never there
猜你喜欢