Circles Lesson - GCSE

Presentation

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Mathematics

•

10th Grade

•

Practice Problem

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Medium

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CCSS

7.G.B.4, 8.G.C.9, 5.MD.C.3A

Standards-aligned

online Maths

Used 63+ times

FREE Resource

12 Slides • 11 Questions

Circles

Working out area and circumfrence

Multiple Choice

Warm Up

If we are looking at length, area and then volume which of these answers has the units in the correct order?

cm, cm³, cm²

cm³, cm², cm

cm, cm², cm³

Multiple Choice

Which part of the circle is the arrow pointing to?

Arc

radius

Diameter

Circumference

Multiple Choice

Which part of the circle is the arrow pointing to?

chord

arc

middle

radius

Fill in the Blanks

What is the circumference of this Circle with radius 3cm? Use 3.14 for Pi ( $\pi$ ) in your calculation. Circumference is

2\pi r\ or\ \pi d

Type answer...

Answer: Circumference of Circle with Radius of 3CM

$\pi=3.14\ \$ Circumference is $2\pi r\ \ or\ \ \pi d$
Radius is 3 so this is 2 x 3.14 x 3
2 x 3.14 x 3 = 18.84cm

Fill in the Blanks

What is the circumference of this Circle with diameter 7cm? Use 3.14 for Pi ( $\pi$ ) in your calculation. Circumference is

2\pi r\ or\ \pi d

Type answer...

Fill in the Blanks

What is the circumference of this Circle with diameter 5cm? Use 3.14 for Pi ( $\pi$ ) in your calculation.

Type answer...

Fill in the Blanks

What is the area of this Circle with radius 3cm?

Use 3.14 for Pi ( $\pi$ ) in your calculation.

Area is $\pi r^2$ (just write down the numbers)

Type answer...

Answer: Area of Circle with Radius of 3CM

$\pi=3.14\ \$ Area is $\pi r^2$
Radius is 3 so this is 3.14 x $3^2$
= 3.14 x 9 = 28.26 $cm^2$

Fill in the Blanks

What is the area of this Circle with diameter 7cm?

Use 3.14 for Pi ( $\pi$ ) in your calculation.

Area is $\pi r^2$ (just write down the numbers)

Type answer...

Fill in the Blanks

What is the area of this Circle with radius 2cm?

Use 3.14 for Pi ( $\pi$ ) in your calculation.

(just write down the numbers)

Type answer...

Fill in the Blanks

What is the volume of this cylinder with radius 5cm and height 10cm?

Use 3.14 for Pi ( $\pi$ ) in your calculation.

(just write down the numbers)

Type answer...

Answer: Volume of Cylinder with Radius 5cm

and height 10cm

$\pi=3.14\ \$ Area is $\pi r^2$ Volume is Area x height
Radius is 5 so this is 3.14 x $5^2$
Area = 3.14 x 25 = 78.5 $cm^2$
Volume is Area x Height = 78.5 x 10
= 785 $cm^3$

Fill in the Blanks

What is the volume of this cylinder with radius 6cm and height 5cm?

Use 3.14 for Pi ( $\pi$ ) in your calculation.

(just write down the numbers)

Type answer...

Circles

Working out area and circumfrence

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