Answer:

Step-by-step explanation:
we have

we know that

In this problem

substitute in the formula


Answer:
#1: 5
#2: 
Step-by-step explanation:
Inverse of Pythagorean Theorem: c²-b²=a²
c² b² a²
13²- 12² = 25
= 5
Pythagorean Theorem: a²+b²=c²
a² b² c²
2² + 6² = 40
c = 
DEF = BAC : x = 15 <==
once u allign ur triangles, u will see that there is a scale factor of 1.5.
6 * 1.5 = 9
1.5(x - 5) = 15
1.5x - 7.5 = 15
1.5x = 15 + 7.5
1.5x = 22.5
x = 22.5/1.5
x = 15 <==
Answer:
32.35mm2
Step-by-step explanation:
3.21 squared is 10.3041
and Multiply 10.3041 by pi(3.14) to get 32.354
albums: 15*7 = 105 cards
packages : 8*13 = 104 cards
extra cards 10
total cards =albums+ packages + extra cards
= 105+ 104 + 10
219 cards