Question

The question ask to find the area
So the Area of a trapezoid is
A=1/2h(b1+b2)
A= 1/2(4) ( 3)(7)
A= 1/2 (12+ 28)
A= 1/2 (40)
A=20
So is the area 20

Answer 1

20 cm^2
don't forget the units
your calculation is correct

Answer 2

Wait.
Your final answer is correct, but there is a mistake in the calculations.

Answer 3

A=1/2h(b1+b2) <--- correct formula
A= 1/2(4) ( 3)(7) <--- there is a + missing between the 3 and the 7
this line should read A = (1/2)4(3 + 7)
A= 1/2 (12+ 28) <--- you used the distributive property correctly
A= 1/2 (40) A=20 <--- your final answer is correct

A = (1/2)4(3 + 7) <--- when you are here, since you have numbers
in the parentheses, you can add them first.
A = (1/2)4(10)

A = 2 * 10

A = 20

Answer 4

Once again, your method using the distributive property is correct, but there is no need for it since you can do the calculation inside the parentheses first.

Answer 5

Thank you so much

Answer 6

You're welcome.