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Alborosie
3 years ago
10

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

Mathematics
2 answers:
ELEN [110]3 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]3 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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HURRYYYYYY !! A cube has an edge length of 9 centimeters.
CaHeK987 [17]
The perimiter is 4 times 1 side
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5 0
3 years ago
mark invests 8000 in an account that pays 12% interest and 2000 in one that pays 8%. if he leaves the money in the accounts for
frez [133]

mark must leave it for 5.5 months or 5 and half moths to gain 5600 in interest​ .

<u>Step-by-step explanation:</u>

Here we have , mark invests 8000 in an account that pays 12% interest and 2000 in one that pays 8%. if he leaves the money in the accounts for the same length of time, We need to find how long must he leave it to gain 5600 in interest​ . Let's find out:

Let mark invests 8000 in an account that pays 12% interest and 2000 in one that pays 8% for time x months , So total interest gain is 5600 i.e.

⇒ \frac{8000(12)}{100}(x) +\frac{2000(8)}{100}(x) =5600

⇒ \frac{8000(12)+2000(8)}{100}(x) =5600

⇒ (80(12)+20(8))(x) =5600

⇒ (960+160)(x) =5600

⇒ (1020)(x) =5600

⇒ x =\frac{5600}{1020}

⇒ x =5.5

Therefore , mark must leave it for 5.5 months or 5 and half moths to gain 5600 in interest​ .

6 0
3 years ago
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