Answer:
2695.49 m
Step-by-step explanation:
A = 2πrh + 2πr2
2 · π · 13 · 20 + 2 · π · 132
2695.4865
Answer:
2 or 2.01
Step-by-step explanation:
solve what's in the parenthesis first
(618) / (306)
then divide
2.0196078431
simplified to 2 or 2.01
Answer:
I need numbers to do a step by step
but the formula for the surface area of a cone.
Firstly, you work out the circle, pi x radius squared.
then you work out the cone
You can now use the measurement of the side to find the area of the cone. The formula for the area of a cone is 3.14 times the radius times the side (πrl).
So the surface area of the cone equals the area of the circle plus the area of the cone and the final formula is given by:
SA = πr2 + πrl
Answer:
19/25
Step-by-step explanation:
56% is also equal to 0.56, or 56/100
V1=50km/h
v2=90km/h
s1=s2=6km
s=12km
The average speed over the 12 km drive:
v=s/t
The time needed to drive 12km will be:
t = t1+t2
t1=s1/v1, t2=s2/v2
t=s1/v1+s2/v2=(s1v2+s2v1)/(v1v2)
v=sv1v2/(s1v2+s2v1)=12*50*90/(6*50+6*90)=64,28 km/h
