△ABC中,AB=12cm,BC=18cm,AC=24cm,若△A′B′C′∽△ABC,且△A′B′C′的周长为81cm.求△A′B′C′各边的长.
人气:409 ℃ 时间:2019-08-18 15:20:18
解答
∵△A′B′C′∽△ABC,
∴△A′B′C′的周长:△ABC的周长=A′B′:AB,
∵△ABC中,AB=12cm,BC=18cm,AC=24cm,且△A′B′C′的周长为81cm,
∴A′B′=18cm,B′C′=27cm,A′C′=36cm.
推荐
- 如图所示,已知AB比AC长2cm,BC的垂直平分线交AB于D,交BC于E,△ACD的周长是14cm,则AB=_cm,AC=_cm.
- 在△ABC中,AB=AC,且△ABC的周长为m cm,若BC=x cm AB=y cm,
- ,在△ABC中,BC = 8 cm,AB的垂直平分线交 AB于点D,交边AC于点E,△BCE的周长等于18 cm,则AC的长等于
- △ABC中,AB=12cm,BC=18cm,AC=24cm,若△A′B′C′∽△ABC,且△A′B′C′的周长为81cm.求△A′B′C′各边的长.
- 已知△ABC∽△A'B'C',且AB=2A'B',若△ABC的周长是26cm,则△A'B'C'的周长是____cm.
- 已知x-y=2,x平方+y平方=12,求x三次方y-2x平方y平方+xy三次方的值
- 鲁迅先生如何塑造孔乙己的形象?求100字的
- The government kept the flooded areas ___with food and ___,and the people here need them to survive
猜你喜欢