Part A

Directions find the missing value in the following right triangles.

Note: Use your calculator and round all your answers to whole numbers.

1.a= 4     b=?     c=10

1. a=?     b=3     c=12

3.a=6      b=?     c=14

4.a=7      b=?     c=12

5.a=?      b=9     c=10

6.a=3      b=?     c=6

7.a=?      b=11   c=14

8.a=10    b=?     c=12

9.a=15    b=?     c=25

10.a=?    b=12   c=12

 

Calculate the surface area of each pyramid with the following values. (P = perimeter, b = one side of the base, s=side, h=height). Number of sides is given in each problem.

1. P = 12 ft, s = 4 ft, b = 4 ft, h=2 ft, 3 sides (base is a triangle)

4. P = 45 yds, b = 15 yds, s=15, h=12, 3 sides (base is a triangle)

6. P = 15 ft, b = 5 ft, s=5 ft, h= 4, 3 sides (base is a triangle)

9. P = 45 yds, b = 15 yds, s=10, h=8, 3 sides (base is a triangle)

12. P = 45 ft, b = 15 ft, s=10, h=8, 3 sides (base is a triangle)

15. P = 27 yds, b = 9 yds, s=30, h=25, 3 sides (base is a triangle)

In the right triangles shown, the measure of angle HFI is the same as the measure of angle JGH. What is the length of side GH? 

In right triangle DEF, angle E is a right angle, DE = 8, and EF = 6. What is the length of DE?