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3 years ago

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a parallelogram has an area of 108 square inches . the base of the parallelogram is 18 inches . explain how you could find the h

eight of the parallelogram

1 answer:

Paraphin [41]3 years ago

4 0

The formula for perimeter is

Side a x2 + side b x2

So just multiply 18 by two, and subtract it from 108

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O) x² – 18x - 19 + 20y - y2,

pshichka [43]

Answer:

19x-19+23y

Step-by-step explanation:

add the like terms

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3 years ago

6% greater than or less than 48%

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3 years ago

Miss McIntosh leaves a $6.75 tip for her waiter. If her tip was 20% of the cost of her meal, what was the cost of her meal?

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2 years ago

Can someone please help me find the area of this polygon, thank you!

Amanda [17]

Answer:

<h2>270 ft²</h2>

Step-by-step explanation:

<h3>METHOD 1:</h3>

<em>Look at the picture</em>

We can divide a given polygon into three rectangles:

$21ft\ \times\ 10ft,\ 4ft\ \times\ 6ft,\ 6ft\ \times\ 6ft$

The formula of an area of a rectangle <em>l × w </em>:

$A=l\cdot w$

Calculate the area of each of the rectangles:

$A_1=(21)(10)=210\ ft^2\\\\A_2=(4)(6)=24\ ft^2\\\\A_3=(6)(6)=36\ ft^2$

The area of the given polygon:

$A=A_1+A_2+A_3\\\\A=210+24+36=270\ ft^2$

<h3 /><h3>METHOD 2:</h3>

<em>Look at the second picture</em>.

We subtract the field of the smaller rectangle (<em>11ft × 6ft</em>) from the field of the large rectangle (<em>21ft × 16ft</em>):

$A_S=(11)(6)=66\ ft^2\\\\A_L=(21)(16)=336\ ft^2\\\\A=A_L-A_S\to A=336-66=270\ ft^2$

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3 years ago