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3 years ago

How do you calculate the area of a circle with the diameter? what's the formula?

Mathematics

1 answer:

alexdok [17]3 years ago

3 0

Area of a circle is pi times the radius squared.

If you know the diameter, just divide it by 2 to get the radius.

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An area of 3.5m² is the same as 350000mm². True or false. Justify your answer

Vsevolod [243]

No, because to convert meter to millimeter you'll have to multiply the length value by 1000 which will give you 3500.

3.5 × 1000

= 3500.

have a great day!

3 0

2 years ago

Read 2 more answers

2.8x = -9.24 A. 12.04 B. -0.3030 C. 12.04 D. -3.3

Hunter-Best [27]

Answer:

D. -3.3

Step-by-step explanation:

=> 2.8x = -9.24

=> x = -9.24/2.8

=> x = -3.3

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3 years ago

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THIS IS WORTH 44 POINTS!!

alukav5142 [94]

Hello there!

Your answer would be

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CAT (bottom line) = BZS (top line)

Hope I helped!

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3 years ago

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If sin x = .42, what is cos x?

34kurt

From the identity,
sin^2(x)+cos^2(x)=1
then
cos(x)=sqrt(1-sin^2(x))
where sin(x) is given as 0.42.

Note that the above answer applies to 0<x<90 degrees

6 0

3 years ago

A military aircraft can travel 740 miles per hour. The distance between Tyndall Air Force Base in Florida and Lakenheath Air For

BARSIC [14]

Answer: 3.5 h

Step-by-step explanation:

1. Data:

a) s = 740 miles / h

b) d = 2,567 miles

c) t = ?

2. Equation:

speed = distance / time

s = d / t

3. Solution:

Solve the equation for t:

s = d / t ⇒ t = d / s

Substitute values:

t = 2,567 miles / (740 miles/h) ≈ 3.47 h ≈ 3.5 h

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3 years ago