Question

We are pretty possitive these are correct. Just making sure :) For fan && medal ^_^

Answer 1

@genius12 @Ajk For medal?? Check me plz? lol

Answer 2

180 is correct

Answer 3

area = 1/2 * d1* d2 = 1/2 * 12 * 15 = 90

Answer 4

for number two I got 90? I just did (1/2)*(7.5)*(6) which came out to 22.5, then multiplied by 4 to get 90. Haven't looked at the other two yet.

Answer 5

I like 22 for the last question

Answer 6

a parallogram if its diagonals perpendiccular each other, it can be a rhombus. so we can use the formula the area of a rhombus = 1/2 * d1 * d2

Answer 7

90 makes since. I gotch now. I never figure it to the end, I just find a number and stop. But you gotta divide by 2. I think I've reallly got it! :)

Answer 8

and i'm liking 22.5 for answer 1.

Answer 9

@Ajk thank you thank you thank you!!!

Answer 10

np. I tutor at my school but usually don't get geometry questions, so it is nice to brush up on it here.

Answer 11

well the area of a trapezoid can be found by using the formula

((base1 + base2)/2) times height

so 1

((8 + 1)/2) times 5 is

9/2 times 5

45 / 2 is indeed 22.5

for 3

166.5 = ((15 + b2)/2) times 9

so

166.5 divided by 9 is 18.5

18.5 = ((15 + b2)/2)

18.5 times 2 is

37 = 15 + b2

subtract 15 from both

22 = base 2

now check

166.5 = ((22 + 15)/2) times 9
166.5 = 37/2 times 9

166.5 = 333/2
333/2 is indeed 166.5

so base 2 is 22

good job :)

Answer 12

kind of late sorry x)

Answer 13

Thank you!! :D