*
abdominal muscle
, two heights are known, so the length of the bottom corresponding to 18 is
270*2
/
18
=30
22.5 The length of the corresponding bottom edge shall be
270*2
/
22.5
=24
This is a parallelogram with equal sides, so the perimeter is.
(30
+24)
*
2
= 108
Hope to adopt