Question

Need help with 1-4.

Answer 1

1. 8 cm

2. 15 cm

3. 28 cm

4. 32 cm

Explanation:

1. 12/6= 2

20/10= 2

Scale Factor= 2

16/2= 8cm

2. 30/18= 1.6666667

15/9= 1.6666667

Scale Factor= 1.6666667

25/1.6666667= 15cm

3. 16/12= 1.333333

32/24= 1.333333

Scale Factor= 1.333333

(21)(1.333333)= 28cm

4. 15/12= 1.25

25/20= 1.25

Scale Factor= 1.25

40/1.25= 32cm

Answer 2

for number 4 the answer is 32 in (please read below)

Explanation:

I will do one of them for now... how about number 4.

Similar triangles means we are going to setup a proportion:

Small triangle Big Triangle

Corresponding 12 15

Corresponding x 40

So the proportion is 12/x=15/40

cross multiply

12(40)=15(x)

Divide both sides by 15

giving x=12(40)/15=32

Try number 1... And I will check it for you (just post as a new question-I will be looking for it)