Well
It needs to calculate the volume of a rectangular prism (10*20*20) and subtract from it the volume of a half cylinder with a radius of 10 cm and height of 20
as follows:
prism volume = 10*20*20 = 4000 cm^3
half cylinder volume = 0.5 * pi * r^2 * h = 0.5* 3.14 * 10^2 * 20 = 3140 cm^3
Subtract 3140 from 4000, results in: 860 cm^3
I hope that explains what you are stuck in
Answer:
31
Step-by-step explanation:
From the expression
F(n + 1) = F(n) -3
>> f(n+1)-f(n) = -3
f(n) = f(n+1) + 3
f(4)- f(3) = -3
f(4) + 3 = f(3)
22 + 3 = 25 = f(3)
Similarly ; f(2) = f(3) + 3 = 25 + 3 = 28
f(1)= f(2) + 3 = 28 + 3 = 31


____________________________________

A dog is moving at a constant speed of 8 m/s, that concludes that there's no change in its speed with respect to time.
And Acceleration is define as rate of change in velocity, but since velocity/speed is constant. change in velocity = 0
Henceforth, Acceleration of dog is 0 as well.
Answered by : ❝ AǫᴜᴀWɪᴢ ❞