meganwintergirl
27.06.2019 •
Mathematics
Mr. malloy wants to make sure amo and javier get the best possible grade after five tests and can either give a grade based on the median or the mean.
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Ответ:
The answer is C
Step-by-step explanation:
Edg
Ответ:
A = B = C = 60°
a = b = c
a = 10 in
K = 43.3013 in2
P = 30 in
s = 15 in
h = 8.66025 in
Step-by-step explanation:
Formulas and Calculations for a equilateral triangle:
Perimeter of Equilateral Triangle: P = 3a
Semiperimeter of Equilateral Triangle: s = 3a / 2
Area of Equilateral Triangle: K = (1/4) * √3 * a2
Altitude of Equilateral Triangle h = (1/2) * √3 * a
Angles of Equilateral Triangle: A = B = C = 60°
Sides of Equilateral Triangle: a = b = c
1. Given the side find the perimeter, semiperimeter, area and altitude
a is known; find P, s, K and h
P = 3a
s = 3a / 2
K = (1/4) * √3 * a2
h = (1/2) * √3 * a
2. Given the perimeter find the side, semiperimeter, area and altitude
P is known; find a, s, K and h
a = P/3
s = 3a / 2
K = (1/4) * √3 * a2
h = (1/2) * √3 * a
3. Given the semiperimeter find the side, perimeter, area and altitude
s is known; find a, P, K and h
a = 2s / 3
P = 3a
K = (1/4) * √3 * a2
h = (1/2) * √3 * a
4. Given the area find the side, perimeter, semiperimeter and altitude
K is known; find a, P, s and h
a = √ [ (4 / √3) * K ] = 2 * √ [ K / √3 ]
P = 3a
s = 3a / 2
h = (1/2) * √3 * a
5. Given the altitude find the side, perimeter, semiperimeter and area
h is known; find a, P, s and K
a = (2 / √3) * h
P = 3a
s = 3a / 2
K = (1/4) * √3 * a2