如图,已知平行四边形ABCD的周长是44厘米,求平行四边形的面积是多少平方厘米?
(A点到C点距离7cm,高是4cm)
1194838594
人气:255 ℃ 时间:2020-03-23 00:39:29
解答
设平行四边形高对应的底为X厘米.
2(4+x)=44
8+2x=44 平行四边形面积=ah
2x=36 =18*4
x=18 =72平方厘米
答:平行四边形的面积是72平方厘米.
推荐
猜你喜欢
- what are you doing this weekend?选什么?
- 若sinx≥根号3/2,求x范围
- Looks up at the man that she turned
- 设数列{an{bn}{cn},已知a1=4,b1=3,c1=5,a(n+1)=an,b(n+1)=(an+cn)/2,c(n+1)=(an+bn)/2.求数列{cn-bn}的通项公式(2)求证:对任意n属于N*,bn+cn为定值
- it's tall and strong,but still it has no flowers.
- 甲乙两人从AB两地相向而行,相遇时,甲所行路程为乙的2倍多1.5千米,乙所行路程为甲路程的5/2,两地相距?
- 己知直线ax+4y-2=0与直线2x-5y+b=0互相垂直于点(1,c),求a,b,c,的值
- What will he do if he spend all the money?改错