find the circumference of a pizza if the diameter is 10 inches.

0.314 in.
3.14 in.
3.04 in.
31.4 in.

 31.4 in.

Step-by-step explanation:

We know that the circumference of the circle is given by :-

, where d is the diameter of the circle.

Given : The diameter of the pizza = 10 inches

Then the circumference of the pizza will be :-

We put the value of , we get

Hence, the circumference of a pizza is 31.4 in.

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