Question

3cm and 7cm

Answer 1

Answer:

Length=3cm

breadth=7cm

Area(A)=?

we know that,

Area of rectangle (A)=l*b

=3cm*7cm

= 21cm^2

Now,

Perimeter (P)= 2(l+b)

=2(3cm+7cm)

=2*10cm

=20cm Ans.

Answer 2

Its must be a rectangle

• Length=3cm
• Breadth=7cm

Perimeter:-

$\\ \sf\longmapsto 2(L+B)$

$\\ \sf\longmapsto 2(3+7)$

$\\ \sf\longmapsto 2(10)$

$\\ \sf\longmapsto 20cm$

Area:-

$\\ \sf\longmapsto Length\times Breadth$

$\\ \sf\longmapsto 3(7)$

$\\ \sf\longmapsto 21cm^2$