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10/4

Bell Activity: Complete the attached puzzle in less than 60 seconds

Two Dimensional Shapes

Learning objectives

• Be able to find composite shapes including parts of a circle

•To be able to find the area and perimeter of sectors of a circle.

How do you find the area of this shape again?

π x radius ²

So what’s the area of this Circle, radius 12.4cm?

Don’t forget pi

Working backwards

r = radiusd = diameter

This circle has circumference 28.6cm.

What do you think its diameter is?

Its radius?

Working backwards

r = radiusd = diameter

This circle has area 398cm².

What do you think its radius is?

Its diameter?

Find the area of this shape…

250.3cm

8m

28°

Find the area of this sector

Find the perimeter.

Can you leave your answer in terms of π?

10m

17.5°

Find the area of this sector

Find the perimeter.

Can you leave your answer in terms of π?

You need to work on Exercise 9E, 9F, and 9G

You decide what your priority is!

Without looking back, write down how you construct a triangle using ruler and compasses

Now write down 6 quadrilaterals (and how to find their area)