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Sphinxa [80]
3 years ago
11

A square has a perimeter of 28 feet what is its area

Mathematics
2 answers:
Westkost [7]3 years ago
7 0
Given:
square shape
Perimeter 28 feet
Find its area

A square has 4 equal sides, so perimeter is 4a

Perimeter = 4a
28 ft = 4 a
28 ft / 4 = a
7 = a

One side of the the square is 7 ft.

Area of a square is the measure of one side raised to the power of 2.

A = a²
A = (7 ft)²
A = 49 ft²
kotykmax [81]3 years ago
5 0
A square has sides of equal length.
So 28 ÷ 4 = 7.
Then to work out the area, you have to multiply the length by the width.
So 7 × 7 = 49ft².
Hope this helped :)
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Step-by-step explanation:

Part a) What is the function’s equation written in vertex form?

we know that

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Looking at the graph

The vertex is the point (2,-8)

substitute

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Part b) What is the function’s equation written in factored form?

we know that

The equation of a vertical parabola written in factored form is equal to

f(x)=a(x-x_1)(x-x_2)

where

a is a coefficient

x_1 and x_2 are the zeros or x-intercepts of the function

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Looking at the graph

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substitute

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f(x)=2x(x-4)

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