Math Is Fun Forum

emmakatecumbo

Member

Registered: 2017-09-22

Posts: 35

Geometry Work

I have finished the first set of questions. I have no idea how to complete the bottom half. Help

What is the value of c, if...

1. a=3 and b=4

SQRT 25

2. a=7 and b=8

SQRT 113

3. a=13 and b=15

SQRT 394

4. a=7 and b=9

SQRT 130

5. a=10 and b=7

  SQRT 149

6. a=9 and b=12

  SQRT 225

7. a=6 and b=8

  SQRT 100

8. a=6 and b=12

  SQRT 180

9. a=12 and b=16

  SQRT 400

10. a=2 and b=3

  SQRT 13

What is the value of b if...

11.  a=6 and c=12

12. a=18 and c=30

13. a=7 and c=SQRT 85

14. a=1 and c=5

15. a=1 and c=SQRT 2

16. a=10 and c=12

17. a=21 and c=35

18. a=5 and c=18

19. a=6 and c=6(SQRT 2)

20. a=11 and c=12

zetafunc

Moderator

Registered: 2014-05-21

Posts: 2,436

Website

Re: Geometry Work

Hi emmakatecumbo,

You have been using the equation

, or

.

You can rearrange the first equation like this:

Can you use the last equation to find b for each question?

emmakatecumbo

Member

Registered: 2017-09-22

Posts: 35

Re: Geometry Work

For the first question would you do
6 divided by 2 - 12 divided by 2
or am i doing this wrong

emmakatecumbo

Member

Registered: 2017-09-22

Posts: 35

Re: Geometry Work

wait I times it by the same amount. would number 11 be 180?