Answer:
336+76+48+38= 498
Step-by-step explanation:
add all those sides up because it is just the perimeter
Answer:
Area of river = 3 × 40
= 120 
amount of water that falls into the sea ⇒
= Area × rate
= 120 × 2 
= 120× 
= 2 × 2000
= 4000 
∴4000 of water falls into the sea permin.
Step-by-step explanation:
Hope it is helpful...
Actually the position function with respect to time under constant acceleration is:
a=g
v=⌠g dt
v=gt+vi
s=⌠v
s=gt^2/2+vit+si
So if vi and si are zero then you just have:
s=gt^2/2
Notice that it is not gt^2 but (g/2) t^2
So the first term in any quadratic is half of the acceleration times time squared because of how the integration works out...
Anyway....
sf=(a/2)t^2+vit+si
(sf-si)-vit=a(t^2)/2
2(sf-si)-2vit=at^2
a=(2(sf-si)-2vit)/t^2 and if si and vi equal zero
a=(2s)/t^2
U can round 289 to 290 and round 7 to 5 or 10
