Please leave an explanation of how you got your answer! Brainliest for the best answer! Thank You! Select all expressions that represent the total inches of the perimeter of this figure.
( look at the numbers below the picture to solve, many made the mistake)

first and third one

Step-by-step explanation:

hope this helps (:

2 Answers:

Explanation:

The perimeter around a full circle is known as the circumference. The formula for the circumference is

C = pi*d

where d is the diameter. In this case, d = 1, so the circumference of a circle with diameter 1 inch is pi inches.

But we only have half a circle, or semicircle. So we cut this in half to get pi/2. This is the curved distance around the ice cream cone shape.

The straight line distances of 1 and 1 are also part of the perimeter. So that's how we get the perimeter to be pi/2 + 1 + 1. We do not add the dotted line as part of the perimeter because it is not on the outside or exterior.

Use of a calculator will show that pi/2+1+1 = 3.57 approximately, so this is another way to express the perimeter.