Answer:
26km
Step-by-step explanation:
The train can travel 78km per hour or per 60 min
78 = 60
x = 20
Cross multiply:
(78)(20) = 60x
1560 = 60x
x = 26
Thus the train travels 26km in 20 min
Answer:
∠ f = 33°
Step-by-step explanation:
Using the sine ratio in the right triangle
sin f =
=
, thus
∠ f =
(
) = 33° ( to the nearest degree )
Answer: V≈50.27
Step-by-step explanation: V=πr^2h/3
Plug in: π(4)^2 3/3
16π
Decimal Form:
50.26548245
Round≈50.27
Hope this helps and would appreciate brainliest! Have a great day.
Answer:
840
Step-by-step explanation:
Hi there!
Usually, this kind of problem asks us the perimeter rather than the area. But when talking on this grid on how many cms are necessary to construct one made up of 9 squares 1cm x1 cm. We need to check one thing: Some line segments will be used twice. So this is not a classical perimeter question.
1) So we either manually and carefully count it avoiding not doing it twice the same common line segments.
Or.
2) By just applying an algorithm, Where n is the <em>nxn</em> grid

So, for the 20x20 grid