ABCD is rectangle. If AB=20 and ar ABCD =100cm. find BC
avni2017:
30 cm
Answers
Answered by
2
Answer:
BC=5 cm
Step-by-step explanation:
ar=100cm square
AB=L=20cm
ar=LxB
100=20xB
100/20=B
5cm=B
BC=B=5cm
this is wrong
it's right
Answered by
0
ab=20
ab=cd
so cd is 20cm
so2(20)+2ac
so 40+2ac=100
2ac=60
àc =60/2
ac=30
so
ab=cd=20
ac=bc=30
i think this help you
ab=cd
so cd is 20cm
so2(20)+2ac
so 40+2ac=100
2ac=60
àc =60/2
ac=30
so
ab=cd=20
ac=bc=30
i think this help you
Attachments:
u took 100 as the perimeter instead it was the area
Similar questions