Iwill give 25 points! will mark brainliest if correct! i dont care if you show work i just need the answers!

1.) solve each formula for the variable indicated in red: v=lhw ( w is in red )
2.)solve each formula for the variable indicated in red: c=2πr ( r is in red )
3.)solve each formula for the variable indicated in red: v= 1/3 bh ( b is in red )
4.) a black mamba travels 20 mi/h for 1/4 mile. how many seconds does it take the snake to travel 1/4 mile? solve the distance formula for time. for which variables in the formula should you substitute 20 and 1/4. how many seconds are in an hour.