Embedded Files
Learning aim
Learning aim
Calculate the area and perimeter of 2D shapes including triangles and circles
FOUNDATIONS
FOUNDATIONS
Parts of circles worksheet - you must be familiar and comfortable with radius and diameter. There are printed copies of this worksheet in the classroom.
and check your answersย
Perimeter is the length all the way around the outside of a shape.ย
Perimeter is the length all the way around the outside of a shape.ย
perimeter of sqaures and rectangles.webmL1 - squares and rectangles
L1 - squares and rectangles
๐ฅ Watch video A and complete the guided notes
Perimeter
Perimeter
means the total length around a shape
square = 4 x length
triangle = length a + length b + length cย
equilateral triangle = 3 x length (because all sides are equal)
rectangle and parallelogram = 2(length + width) OR 2 x length + 2 x width
The main thing is that you add up the length of every side of the shape.
5.2 perimeter L2.webmL2 - other shapes
L2 - other shapes
2. ๐ฅ Watch video B and complete the guided notes
Circumference of a circle = ฯd or 2ฯr
Circumference of a circle = ฯd or 2ฯr
Perimeter is the distance around any 2D shape.ย
Circumference is a special name for the perimeter of a circle, or 2D shapes with curves.ย
ฯ is just a number which is equal to 22/7 or 3.142.
ฯ is just a number which is equal to 22/7 or 3.142.
We use ฯ when we need to calculate the area or circumference of a circle. Make sure you learn this formula because it won't be given to you in the exam.
3. ๐ MUST DO activity in Google classroom
Complete your 2D shape reference sheet with the formula for the circumference of a circle.
4.๐ mastery check
Page updated
Report abuse