Help me please area of trapezoids
1 answer:
Answer:
Area of ABCD = 30 cm2
Step-by-step explanation:
We have the formula to calculate the area of a trapezoid as following:
<em>Area of a trapezoid = 1/2 x (Base side 1 + Base side 2) x Height </em>
The two base sides of a trapezoid is parallel.
In the trapezoid ABCD, vector AB and vector DC have the same direction
=> AB and DC are parallel and they are two base sides of the trapezoid.
As BH is perpendicular to DC
=> BH is the height of the trapezoid and BH = 6cm
So that the are of the trapezoid is:
Area of ABCD = 1/2 x (AB + DC) x BH = 1/2 x (4+6) x 6 =30 cm2
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Answer:
The answer is given below
Step-by-step explanation:
a)
Let us assume Patricia baked x number of cakes. She put half of the cupcakes (i.e x/2) equally into 6 big boxes.
6 big boxes contained cakes, therefore 1 big box would contain
cakes.
Let us assume she put the other half into 14 small boxes, therefore each small box would contain cakes.
There were 45 cupcakes in 3 big boxes and 8 small boxes altogether. That is:
Therefore Patricia baked 84 cup cakes
b)
She sold all the small boxes and collected $189, i.e she sold 14 small box for $189. Each small box = $189/14 = $13.5