Circle Areas and Circumference

Circle Areas and Circumference

By: Mr. Mansour

• Radius = Un media parte del circulo (1/2 the circle distance)

• Diametre = En todo el circulo (the full circle)

• Circumference = Alrededor de todo el circulo (distance around the circle)

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Mira a la gif

Radius, Diameter, Circumference

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Fill in the Blanks

Que es el radius?

Multiple Choice

Que es la diametre?

• 8cm

• 16cm

• 10cm

• 4cm

Multiple Choice

What is the radius of this circle?

• 18in

• 36in

• 9in

• 6in

Draw

Dibuje un circulo con un diametre de 12cm

Fill in the Blanks

Que es la radius de este circulo? (Recuerda - radius es media del circulo)

C = 3.14 x diameter

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or

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C = 3.14 x radius x 2​

Mira al gif

Circumference

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Fill in the Blanks

Busque la circumferencia (el foto es un circulo)

Fill in the Blanks

Busque la circumferencia (usa un valor de decimal)

Area = π​ × radius²

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Ex. - A = ​π​ × 5²

A = π​ × 25

A = 78.5

​* 5² no es 5x2

​* 5² es 5x5

​Some text here about the topic of discussion.

Area of circle

Multiple Choice

Find the area of the circle

• 43.96 units²

• 153.86 units²

• 87.82 units²

• 307.72units²

Multiple Choice

What is the area of this circle?

• 452.39 cm²

• 139.12 cm²

• 113.1 cm²

• 84.23 cm²