Respuesta :

Answer:

h = 6 mm

Step-by-step explanation:

Using the formula A = 1/2(bh) and the variables we already know, we can solve this question.

A = 1/2(b*h)

Substitute variables. We know that

A = 36 mm and b = 12 mm.

36 = 1/2(12h)

Multiply 12h by 1/2.

36 = 6h

Divide both sides by 6.

h = 6.

To prove this, insert all of the variables in the equation:

A = 36, b = 12, and h = 6. If both sides are equal, then the variable h is correct.

A = 1/2(b*h)

36 = 1/2(12*6)

36 = 1/2(72)

36 = 36