问题 解答题
设长方形的面积是S,相邻两边的长分别是a,b.
(1)若S=16cm2,a=
6
cm,求b;
(2)若S=
72
cm2,b=
50
cm,求a.
答案

(1)根据题意得:b=

S
a
=
16
6
=
8
6
3
cm;

(2)根据题意得:a=

S
b
=
72
50
=
6
5
cm.

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