问题
填空题
已知△ABC∽△A′B′C′,且AB:A′B′=2:3,S△ABC+S△A'B'C′=75,则S△A'B'C=______.
答案
∵△ABC∽△A′B′C′,AB:A′B′=2:3,
∴S△ABC:S△A'B'C′=4:9,
∵S△ABC+S△A'B'C′=75,
∴S△A'B'C′=
×75=9 4+9
.675 13
故答案为:
.675 13
已知△ABC∽△A′B′C′,且AB:A′B′=2:3,S△ABC+S△A'B'C′=75,则S△A'B'C=______.
∵△ABC∽△A′B′C′,AB:A′B′=2:3,
∴S△ABC:S△A'B'C′=4:9,
∵S△ABC+S△A'B'C′=75,
∴S△A'B'C′=
×75=9 4+9
.675 13
故答案为:
.675 13