Question

PLEASE SOLVE THIS STEP
BY STEP AND DON'T POST IRRVRLENT ANSWER PLEASE STEP BY STEP NOT DIRECT ANSWERE​ PLEASE IF ANYONE WILL BE SEND ANSWER STEP BY STEP I PROMISE THAT I WILL MARK HIM OR HER ANSWERED AS BRAIN LIEST AND FOLLOW HIM OR HER AND THANK HIS OR HIS 5 ANSWERES BUT ANSWERE SHOULD BT STEP BY STEP AND DON'T SEND IRRELEVENT ANSWERES IF ANYONE WILL SEND IRRVRLENT I WILL REPORT HIM OR HER ALL ANSWERES ​

Answer 1

length of unknown rectangles =9-8=1

area of rectangle B=32cm²

or,l×b=32cm²

or,8×b=32

or b=4cm

area of unknown rectangle=l×b

=1cm×4cm

=4cm²