Answer:
.
Step-by-step explanation:
Answer:
k
Step-by-step explanation:
lol
Answer:
Volume = 35185.8 
Step-by-step explanation:
Recall the formula for the volume of a cone: 
Where R is the radius of the cone's circular base (in your case half of 80 km,(that is 40 km)
And h stands for the height of the cone (in your case 21 km)
We replace such in the formula and calculate its final value:

We round it to the number of decimals your problem request (let's say to one decimal) and also include the cubic units:
Volume = 35185.8 
Answer:
37.5
Step-by-step explanation:
3 ÷ 8 = 0.375
0.375 × 100 = 37.5
Step-by-step explanation:
x-25= 6x-5
-5x = 20
x=-4