Question

Find the perimeter of the following shapes. ​

Answer 1

Answer:

Perimeter of fig. (d) = sum of the sides

= 15+18+14+12+40+12

= 111 cm

Perimeter of fig. (e) = sum of the sides

= 5+23+12+12+23+5+28+25+28

= 161 cm

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hope it helps you...

Answer 2

Solution (B) :-

As we know that

Perimeter :- Sum of length of all the sides of a shape is known as perimeter of that shape.

Here the all sides of the given figure are

• 18 cm , 15cm , 40 cm , 12cm, 14cm

Now sum of all the sides is equal equal to perimeter

→ Perimeter = 18 + 15 + 40 + 2(12) + 2(14)

→ Perimeter = 115cm

Note :- Here we took 12 & 14 as two times because there are similar sides like that in the given figure .

Solution (C) :-

Using the same condition which we have used in solution B

→ Perimeter = 5 + 2(28) + 12 + 25 + 12 + 2(23)

→ Perimeter = 166 cm

Hence ,

• Perimeter of fig.B = 115cm
• Perimeter of fig.C = 166cm