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4 years ago

A circular mirror is surrounded by a square metal frame. The radius of the mirror is 7x.

Mathematics

1 answer:

mixer [17]4 years ago

4 0

Answer: The area of the frame is 287.14x² square units

Step-by-step explanation:

The formula for determining the area of a circle is expressed as

Area = πr²

Where

r represents the radius of the circle.

π is a constant whose value is 3.14

From the given information,

radius = 7x

Therefore, area of the circular mirror is

3.14 × (7x)² = 153.86x² square units

The formula for determining the area of a square is expressed as

Area = L²

From the information given,

L = 21x

Area of the total square metal frame is

(21x)² = 441x²

Therefore, area of the metal frame is total area of the square - area of the mirror. It becomes

441x² - 153.86x² = 287.14x² square units

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SCORPION-xisa [38]

Complete Question:

The local Farm Market sells peppers at five for $2.25. Write an equation that relates the number of peppers, n, and the cost, C.

Answer:

$C = 0.45n$

Step-by-step explanation:

Given

$5\ peppers = \$2.25$

Required

Determine the relationship between C and n

$5\ peppers = \$2.25$

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$\frac{5\ peppers}{5} = \frac{\$2.25}{5}$

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