Question

Eeeek help, I don’t exactly know how to calculate the width of the missing shape!

Answer 1

Answer:

Perimeter = 101.2 cm

Step-by-step explanation:

The given figure has a length of 18 cm and width of 24 cm.  A rectangle of length 8.6cm has been cut out, however, the question is asking to find the perimeter, or distance around the figure.  The overall rectangle still has a perimeter of 18 + 18 + 24 + 24 = 84. However, now it also has two additional sides of 8.6cm each, so 8.6 + 8.6 = 17.2.  

Add all the sides together for perimeter:

84 + 17.2 = 101.2 cm