Asked by A
The surface area of a triangular prism. The base is a right triangle with base 1 foot, height 2 feet and third side 2 point 2 feet. The height of the prism is 3 feet.
Answers
Answered by
R_scott
2 + 3 (1 + 2 + 2.2)
Answered by
mathhelper
If your base is 1 ft, by 2 ft, by 2.2 ft, it is NOT a right angled triangle
1^2 + 2^2 ≠ 2.2^2
check your question or your typing
1^2 + 2^2 ≠ 2.2^2
check your question or your typing
Answered by
oobleck
Where is the vertex of the pyramid in relation to the base?
That will affect the slant heights of the faces.
That will affect the slant heights of the faces.
Answered by
mathhelper
IF it is a right-angled triangle with base 1 and height of 2, then we
need to find the third side.
Make a sketch of a triangle with base 1 and side of 2.2, draw a
perpendicular from the end of the 2.2 to the base, label it height = 2
Let A be the vertex of segment 2.2 and the base 1
sin A = 2/2.2 = .9090...
angle A = 65.38°
thirdside^2 = 1^2 + 2.2^2 - 2(1)(2.2)cos 65.38
= 4.007
third side = √4.007 = 2.002
So for all practical purposes, R_scott's answer is correct
need to find the third side.
Make a sketch of a triangle with base 1 and side of 2.2, draw a
perpendicular from the end of the 2.2 to the base, label it height = 2
Let A be the vertex of segment 2.2 and the base 1
sin A = 2/2.2 = .9090...
angle A = 65.38°
thirdside^2 = 1^2 + 2.2^2 - 2(1)(2.2)cos 65.38
= 4.007
third side = √4.007 = 2.002
So for all practical purposes, R_scott's answer is correct