Hi there!
The total surface area (tsa) of a cone can be calculated with this formula :
TSA = (
× r × slant height) +
× r²
The "r" stands for "radius". The radius is equal to half the diameter, so in order to be able to use the formula, you'll need to divide the diameter by 2 to find the radius :
5 ÷ 2 = 2.5 = radius
Since the slang height is in meters, you'll need to transform it into centimeters in order to have both values in centimeters. To do so you'll need to use the cross product method :
1 m = 100 cm
4 m = x cm
(100 × 4) ÷ 1 = x cm
400 ÷ 1 = x cm
400 = x cm → The slant height is 400cm.
Now replace all the information in the formula and calculate everything :
TSA = (
× 2.5 × 400) + (
× 2.5²)
TSA = (
× 1,000) + (
× 6.25)
TSA ≅ 3,141.59 + 19.63
TSA ≅ 3,161.22 cm²
There you go! I really hope this helped, if there's anything just let me know! :)
We want the coin to land on heads on 5 out of 5 flips.
Each time, the coin has a 1/2 chance of landing on heads.
Since we want it to land on heads 5 times in a row, we multiply 1/2 five times to get the probability.
(1/2) * (1/2) * (1/2) * (1/2) * (1/2) = 1 / (2*2*2*2*2)
= 1 / 32
There is a 1/32 chance of landing heads five times in a row.
Have an awesome day! :)
Answer:
B. lines BE and CG have to be parallel.
Step-by-step explanation: