Answer:
56
Step-by-step explanation:
A∆ = BH/2
Area of a parm is BH (base x height) so we multiply area of triangle by 2.
28 x 2 = 56. There you go
Four hundred seventy and forty seven hundredth
Just use your right angled triangle formula.
A=

Plug n chug
A=

A=71.5
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Answer:
0.4
Step-by-step explanation:
just solve it like an equation.