Question

➕ sign is having four sides
length is 2cm and breadth is 0.5cm find its perimeter

Answer 1

So as per the question + sign has the given measures.

so if we divide that sign in 4 equal halves we will get 4 congruent or equal rectangles.

=> 2 ( 2 + 0.5 ) = one 'rectangles perimeter. => 2×2.5 = 5 cm

so 4 rectangles = 5 × 4 = 20cm

now we have to subtract =20 - 4 × (0.5 × 4 )
20 - 2 = 18 cm

Answer 2

$\textbf{Answer:}$

$\textbf{DIGRAM:}$

Look in attachment

$\textbf{STEP -BY -STEP SOLUTION.}$

PERIMETER = IT IS TOTAL ADDITION OF ALL LENGTH

Eg

In square it's be 4a

Here,a is side of square

In rectangle it's be 2(l+b)

l is length of rectangle

b is breathe of rectangle

NOW BACK ON QUESTION:

SO, our diagram perimeter

a is side of middle square

so ,side of middle square=0.5cm

perimeter of two rectangle form by this + sign

= 4(2(l+b))- peremeter of square in middle

= 4(l+b)-4×a

=8(2+0.5)-4×(0.5)

=8(2.5)-2.0

=20.0-20

=18cm

$\textbf{Hence}$

perimeter of given diagram=18cm