Rachel made a mosaic from different color rectangle tiles 3 tiles measured three and a half inches x 3 inches 6 tiles measures 4 inches x 3 1/4 inches what is the area of the whole mosaic in square inches

So assuming that the only had 3+6=9 tiles

what we have to do it find teh area total

area=legnth times width

3 tiles are 3 and 1/2 times 3

3 times 3 and 1/2=10 and 1/2

times 3 tiles

10 and 1/2 times 3=31 and 1/2 squar inches

6 tiles are 4 by 3 and 1/4

4 times 3 and 1/4=13

6 tiles times 13 inchessquare=78

so we add

31 and 1/2+78=109 and 1/2 square inches