1:
5·7·2=70 A volume
13·2·7=182 B volume
70+182=252 total volume
so the first statement is false just change the numbers to 5,7,2
2:
2·2·2=8 the middle cube volume
15·15·2=450 outside cube volume
450-8=442 total volume
so the third statement is false it should be 442
3:
3·8·12=288 rectangle volume
6·12·3/2=108 triangle volume
288+108=396 total volume
so the second statement is false it should be 108
