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Lelu [443]
3 years ago
11

A circle has a diameter of 6 centimeters what is the approximate area of the circle​

Mathematics
1 answer:
KiRa [710]3 years ago
7 0

Answer:

28.26 cm^{2}

Step-by-step explanation:

The radius is half of the diameter. 6/2 = 3, so the radius of this circle is 3 cm.

The formula for the area of a circle is: πr^{2}

Plugging 3 into the radius, we have:

3^{2} × π =

9 × π

We can round π to 3.14

9 × 3.14 = 28.26

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A hot air balloon descends 15 feet each minute after having reached an altitude of 362 feet above the ground. What is the altitu
salantis [7]

Answer:

182 feet

Step-by-step explanation:

The equation that describes the motion of the hot air ballon is:

h(t) = h_0 - vt

where:

h_0 is the initial altitude

v is the rate of descend of the balloon

t is the time

The balloon starts from a height of

h_0 = 362 ft

and has a rate of descend of

v=15 ft/min

Therefore, after time

t = 12 min

Its altitude will be

h(12)=362 - (15)(12)=182 ft

8 0
3 years ago
Factorize x squared - 1x +10 =0
Natalka [10]

Answer:

no solution exists:

Step-by-step explanation:

x²−1x+10=0

Step 1: Simplify both sides of the equation.

x²−x+10=0

Step 2: Subtract 10 from both sides.

x²−x+10−10=0−10

x²−x=−10

Step 3: The coefficient of -x is -1. Let b=-1.

Then we need to add (b/2)^2=1/4 to both sides to complete the square.

Add 1/4 to both sides.

x²−x+ 1/4=−10+ 1/4

x²−x+ 1/4=−39 /4

Step 4: Factor left side.

(x  -1/2)² = −39 /4

Step 5: Take square root.

x  −1 /2 =±√ −39 /4

Step 6: Add 1/2 to both sides.

x  =−1/2  + 1/2 = 1/2 ±√ -39/4

x = 1/2 ±√ -39/4

No real solutions.

6 0
3 years ago
Find the lateral area of the pyramid to the nearest whole number.
diamong [38]

Answer:

its LSA is 4800m^2.

<em><u>hope</u></em><em><u> </u></em><em><u>helps</u></em><em><u> </u></em><em><u> </u></em><em><u>uh</u></em><em><u>.</u></em><em><u>.</u></em>

6 0
3 years ago
Which graph represents this function f(x)=1/2x-5
Readme [11.4K]

Answer:

The first graph(Left)

Step-by-step explanation:

Because in this form 1/2 is the slope and -5 is the y intercept.

7 0
3 years ago
Read 2 more answers
What are two factors that equal -490 and add up to -21?
Leno4ka [110]
The factors are -70 and 41
-70 x 41 = -490
-70 + 41 = -21
Hope this helps!
3 0
3 years ago
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