Question

Number d is 87cm. Please help me find it

Answer 1

The formula for perimeter, regardless of the shape, is the sum of all the sides together.

Here is the perimeter of number 10:

31 + 25 + 18

74

The perimeter of this figure is A. 74 cm

Hope this helped!

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Answer 2

Explanation:

We know that :

Permieter = Sum of all sides.  

Put the given values :

=> 31 + 25 + 18

=> 74

Hence,

The perimeter = 74 cm.