GEOME-TREE🌳

So today on MATHSPEDIA we shall discuss some elementry Formulae to find the Area and perimeter of 5 shapes

After the lesson if there is a part you don't understand feel free to comment

Fig 1.

So let's start

1a. Area of a square = L×L= L square

Where L= Length

This is so because a square has all it's sides and angles equal

1b. Perimeter of a square = L+L+L+L

=4×L

=4L

Fig 2.

2a. Area of a rectangle= L×B(L=length,B= breadth)

2b. Perimeter of a rectangle= L+L+B+B

                =2L+2B

                                              =2(L+B)

3a. Area of a right angled triangle= 1/2×b×h (b=base, h=height)

3b. Perimeter of a triangle= Sides a+b+c

Fig 3.

4. The area and circumference of a circle will be shown below👇:

Fig 4.

This image above👆 explains the circumference of a circle 

Fig 5.

The image above👆 shows the area and circumference of a circle.

Fig 6.

The image above👆explains everything we've done so far 

And the final one for the day

We'll look at the 

5. Area of a trapezium

Area of a trapezium= 1/2 (a+b)h

Where a and b are the opposite parallel sides and h = height

Fig 7.

That's all for the day

Join us next time for more shapes

 

  Thank you

   Have a nice day

By Emehelu Kenechukwu.