Question

length of a rectangle is 6cm more than its width.if it's length and breadth each is decreased by 3cm, the area of new rectangle is deceased by 36 sq cm .find the original length and breadth of the original rectangle.​

Answer 1

Answer:

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Step-by-step explanation:

ATQ

E

=25V/m

A

=10×10

−2

×15×10

−2

=1.5×10

−2

m

2

Now, we know that ∫ϕ=∫Eda

=E.A

=Eacosθ

As the surface make 30

0

but we have to calculate according to area vector which is perpendicular to the surface, ∴→θ=90

0

−30

0

=60

0

∴ϕ=Eacosθ=25×1.5×10

−2

×cos60

0

=0.1875Nm

2

/C