The diameter of a circle is 8 inches. What is the area?

Mathematics

2 answers:

ELEN [110]2 years ago

7 0

16π in²

Step-by-step explanation:

Step 1:

We know that area of circle is given by

A=π * R² units

Where A= Area

R= Radius = (Diameter/2)

Step 2:

Here r= 4 inches

Area = $\pi * 4 *4$

= $16\pi$ in²

lord [1]2 years ago

6 0

The answer is 50.24. First, take the diameter and divide it by two (4). Then, multiply it by itself (16). Lastly, multiply it by pi,(3.14).

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The height of a parallelogram is 4 times the base. The base measures 3 1/2 ft find the area off the parallelogram

PilotLPTM [1.2K]

Answer:

Area = 49 ft²

Step-by-step explanation:

The formula for area of a parallelogram is A = bh, where b is the base, and h is the height. Here, the base is given and the height is 4 times the length of the base

Here b = 3 1/2, and h = 4(3 1/2) = 14

3 1/2 becomes 7/2 as an improper fraction, 4(7/2) = 28/2 = 14

So the area is

A = 14(3 1/2)

A = 14(7/2)

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2 years ago

Three of exterior angle of n-sided polygon are 50° each two of it's interior angle are 127° and 135° and the remaining interior

irga5000 [103]

Answer:

The value of n is 21.

Step-by-step explanation:

We are given that three of the exterior angle of the n-sided polygon are 50° each two of its interior angle are 127° and 135° and the remaining interior angle are 173 each.

As we know that the sum of all exterior angles of the polygon is 360°. Also, the number of remaining interior angles will be (n - 5).

And, the exterior angle = 180° - the interior angle.

So, according to the question;

$(3 \times 50) + (180-127) + (180 - 135) + (n - 5)\times (180-173) =360$