The equilateral triangle shown is rotated about line a. each side of the triangle measures 20 mm. an equilateral triangle is sho

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The equilateral triangle shown is rotated about line a. each side of the triangle measures 20 mm. an equilateral triangle is sho

wn. line of rotation a goes through one point and the midpoint of the opposite side. what shape is created by the rotation and what is the approximate circumference of the base? circumference of a circle: c = 2πr a cylinder with a circumference of about 63 mm a cylinder with a circumference of about 126 mm a cone with a base circumference of about 63 mm a cone with a base circumference of about 126 mm

Mathematics

1 answer:

Gnesinka [82] · Answer 1 · 2023-05-09T10:24:56+03:00

The circumference of the circle based on the equilateral triangle is 63mm.

<h3>How to calculate the circumference?</h3>

The side of the triangle is 20mm. The radius will be:

= 20/2 = 10

The circumference of the circle will be:

= 2πr

= 2 × 3.14 × 10

= 63

In conclusion, the circumference is 63mm.

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