I need help with # 3 math prob will some body help plz

Question

anonymous · Answer

2. find the height of a tringel with area= 110 ft and base =10ft 
3.if the area of parallelogram ABCD = 246 mm and h= 20.5 mm what is the length of the base of tringle ABD

texaschic101 · Answer

Area of a triangle can be found with this formula : A = 1/2bh
so what is the height of the first triangle ?
what is the base ?

anonymous · Answer

the parallelogram is for #3

anonymous · Answer

oo ya I did and I got 21 I wanted to make sure it was rigth

texaschic101 · Answer

do you know the height of your first triangle ?

anonymous · Answer

7in

texaschic101 · Answer

A = (7 x 6) / 2 = 42/2 = 21
you are correct. Area of triangle is 21

anonymous · Answer

ya ok and what about the other ones

texaschic101 · Answer

2. A = 1/2bh
A = 110
b = 10
now we sub
110 = 1/2(10)h
110 = 5h
110/5 = h
22 = h

check..
A = 1/2bh
110 = 1/2(10)(22)
110 = 5(22)
110 = 110 (correct)

height is 22 ft

anonymous · Answer

yup got it  right :)

texaschic101 · Answer

I am sorry but I do not have time to do your last one...I have to go somewhere...sorry :(

anonymous · Answer

k thanks any way