Answers

2015-03-08T15:01:02+05:30
Area=PQ*ST
=8*4
=32
also 
area = RQ*QU
 32=6*QU
QU=32/6
        =5.3 cm
0
2015-03-08T15:34:26+05:30
See the figure for the reference
ST = 8 cm
PQ = 4 cm
 area of PQRS = base x height 
                      = PQ x ST
                      = 8 x 4 
                      =32 cm²

we can also say that 
base of PQRS is RQ
height of PQRS is QU

area of PQRS = RQ x QU
               32 = 6 x QU
            32/6 = QU
            5.33 cm = QU

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