Question

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Answer 1

Answer:

The value of x is 10 cm.

Step-by-step explanation:

Perimeter is the total length of the sides of a two-dimensional shape.

Perimeter = 77 cm

$x + 1 + x + 1 + 2x + 1 + 2x + 2 + x + 2 = 77\\ x + x + 2x + 2x + x + 1 + 1 + 1 + 2 + 2 = 77\\(1 + 1 + 2 + 2 + 1)x + 7 = 77\\ 7x = 77 - 7\\ 7x = 70\\ x= \frac{70}{7}\\ x = 10 cm$