3 years ago

It cuts off but it is “and two straight lines” PLEASE GUYS THE TEACHER WILL KILL ME!

Mathematics

1 answer:

Katena32 [7]3 years ago

3 0

Answer:

54.3m

Step-by-step explanation:

You have 2 semicircles, one with radius 7 and the other with radius 7+2=9

Perimeter of a circle = circumference = 2*pi*r

Radius of first semicircle = (1/2) * 2 * pi * 7 = 7pi

Radius of second semicircle = (1/2) * 2 * pi * 9 = 9pi

Straight lines have length 2.

Perimeter of whole shape then = 7pi + 9pi + 2 + 2= 16pi + 4 = 54.265...=54.3

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