Question

The length of a square is 21a + 7 b and the width is 11a - 2b. What is the circumference of a square? ​

Answer 1

Step-by-step explanation:

i think it is rectangle.

in square all sides are equal.

circumference of a rectangle is 2( l+b)

2(21a+7b+11a-2b)

2(32a+5b)

64a+10b

thanks