1Tvwo §10.3 Enclosing areas

• Wiskunde
• Middelbare school
• havo, vwo
• Leerjaar 1

§10.3 Enclosing areas

This time start yourself:

+ make the first tasks of §10.3, so start with

   exercise 17, etcetera

+ later this Lessonup is continued!

Give your answers in the next slide!

So key in two numbers.

18ab) Area A and Area B are .... and ....

Solutions:

a. area rectangle around A is 4 x 3 = 12 grid squares

    area triangle A = 1/2 x 12 = 6

b. area rectangle around B is 5 x 3 = 15

     area triangle B = 1/2 x 15 = 7.5 

Now answer c in the next slide.

18c) area A and area B are .... and ....

Solution:

Solutions:

Is it always a triangle, the area you have to calculate?

Answer: no.

Next slides show you other shapes too!

 

In this exercise you see:

- al kinds of forms

- even a form with a part in the middle taken out!

- now follows the general way to tackle these tasks

When doing this task,

+ use the 4 step we saw in the last slide.

+ give a complete calculation instead of only the answer

Homework:

Do Ch10.3  You may skipp the excercises we did together.

As always, check your work with the Solutions book in Teams