i have unit 6 lesson 9 geometry foundations b surface area and volume unit test
for questions 8 and 9:
8. what are the lateral area and surface area of the cone shown below? round the answers to the nearest tenth. the figure is not drawn to scale.
A. LA= 829.4 ft^2, SA= 1,209.5 ft^2
B. LA= 829.4 ft^2, SA= 3.041.1 ft^2
C. LA= 380.1 ft^2, SA= 1,209.5 ft^2
D. LA= 380.1 ft^2, SA= 3,041.1 ft^2
THE CONE DOES NOT SHOW SO I DONT KNOW THE MEASUREMENTS
9. what is the volume of the given prism? round the answer to the nearest tenth of a centimeter. the figure is not drawn to scale.
A. 295.5 cm^3
B. 451.7 cm^3
C. 493.0 cm^3
D. 617.1 cm^3
AGAIN THE PRISM DOESNT EVEN SHOW UP ON MY TEST DOES SOMEONE HAVE THE MEASUREMENTS OR THE ANSWERS??
i really don’t wanna get a low grade bc the test didn’t show up
5 answers
Contact your teacher since there seems to be a major error in the test.
thanks mrs. sue
A. LA= 829.4 ft^2, SA= 1,209.5 ft^2
SA = LA + πr^2
πr^2 = SA-LA = 380.1 = 121π
so, r^2 = 121
r = 11
LA = πr(r+s), so
11π(11+s) = 264π
121 + 11s = 264
s = 13
sin r^2 + h^2 = s^2, h = 4√3
so, the cone has base radius 11 and height 4√3
Do the others the same way.
As for the prism, there is no way to determine its area without some indication of its sides or volume or diagonals or something!
SA = LA + πr^2
πr^2 = SA-LA = 380.1 = 121π
so, r^2 = 121
r = 11
LA = πr(r+s), so
11π(11+s) = 264π
121 + 11s = 264
s = 13
sin r^2 + h^2 = s^2, h = 4√3
so, the cone has base radius 11 and height 4√3
Do the others the same way.
As for the prism, there is no way to determine its area without some indication of its sides or volume or diagonals or something!
What in the world
I need these as well! Please help me