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Galina-37 [17]
3 years ago
9

Radius question * answers listed on pic but I just need a step by step explanation *

Mathematics
2 answers:
chubhunter [2.5K]3 years ago
4 0

Good morning ☕️

Answer:

A. A(x) = 98x²

B. P(x) = 42x

Step-by-step explanation:

Consider L the length of the rectangle and w its width

then according to the figure L = 7x + 7x = 14x and w = 7x

_________________________

A. A(x) = L × w = 14x × 7x = 98x²

_________________________

B. P(x) = 2×(L + w) = 2×(14x + 7x) = 2×(21x) = 42x

___________________________________

:)

Rama09 [41]3 years ago
3 0

Step-by-step explanation:

Let A(x) be the area function of given rectangle.

Radius of circle = 7x

Therefore, length of rectangle = 14x

Width of rectangle = 7x

\therefore \: A(x) =l\times w \\  =  14x   \times  {(7x)} \\ =98x^2 \\  \huge \red{ \boxed{ \therefore \: A(x) =98 {x}^{2} }}

Let P(x) be the Perimeter function of given rectangle.

P(x) =2(l + w) \\= 2(14x + 7x)\\=2\times 21x\\= 42x\\\huge \red{ \boxed{ \therefore \:P(x)= 42x}}

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