If the diameter of a circle is 8 in, what is the area

let's recall that the diameter is always twice as long as the radius, namely if the diameter is 8, its radius is 4 then.

The area of given triangle is  50.14 in²

Step-by-step explanation:

Formula:-

Area of circle = πr²

Where r is the radius of circle

To find the area of triangle

Here diameter of circle = 8 in

Radius r = diameter/2 = 8/2 = 4 in

Area = πr² = 3.14 * 4²

  = 3.14 * 16 = 50.14 in²

Therefore the area of given triangle is  50.14 in²

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

(-1,-0.5)

step-by-step explanation: