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adelina 88 [10]
3 years ago
9

How can you find the area of parallelograms rhombuses and trapezoids?

Mathematics
2 answers:
anyanavicka [17]3 years ago
5 0

Answer:

Step-by-step explanation:

remember that a trapezoid is a quadrilateral with one pair of parallel. sides the formula for the area of a trapezoid is area. equals one-half times parentheses base one plus base two times. height where the bases are the parallel sides

Natalija [7]3 years ago
4 0

Answer:

More Red, Green, or Blue?

-----------------------

In Pattern A, which shapes cover more of the plane: blue rhombuses, red trapezoids, or green triangles? Explain how you know.

---------------------

Here is a link to the pattern where you can move things and be interactive.

Step-by-step explanation:

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Answer:

t = 4

Step-by-step explanation:

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Step-by-step explanation:

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3 years ago
A rectangle has a perimeter of 30 ft. Find a function that models its area A in terms of the length x of one of its sides. What
Vedmedyk [2.9K]

Answer:

Step-by-step explanation:

Let the other side of the rectangle be y. The perimeter of the rectangle is expressed as P = 2(x+y)

Given P = 30ft, on substituting P = 30 into the expression;

30 = 2(x+y)

x+y = 15

y = 15-x

Also since the area of the rectangle is xy;

A = xy

Substitute y = 15-x into the area;

A = x(15-x)

A = 15x-x²

The function that models its area A in terms of the length x of one of its sides is A = 15x-x²

The side of length x yields the greatest area when dA/dx = 0

dA/dx = 15-2x

15-2x = 0

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x = -15/-2

x = 7.5 ft

Hence the side length, x that yields the greatest area is 7.5ft.

Since y = 15-x

y = 15-7.5

y = 7.5

Area of the rectangle = 7.5*7.5

Area of the rectangle = 56.25ft²

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