B^2 = c^2 - a^2
b^2 = 20^2 - 13^2
b^2 = 400 - 169
b^2 = 231
b= square root 231
b = 15.2
The area formula for a triangle is 1/2 (base * height)
Answer:
12/25
Step-by-step explanation:
12+13=25
There are 12 girls.
12/25
2/3 are roses
1/4 of the 2/3 are red
1/4 * 2/3 = 2/12 = 1/6
One-fourth of two-thirds is one-sixth.
Now we need to change 1/6 into a percent.
1 is to 6 as x is to 100.
1/6 = x/100
6x = 1 * 100
6x = 100
x = 100/6
x = 16 2/3
Answer: 16 2/3%
Answer - 13.098 gm
Description -
Dear student,
As we know 
⇒ Mass = Density * Volume
so multiplying given Volume with the Density of gold ,we can calculate the mass of the gold . Density of gold at room temp. is 19.32 grams per cubic centimeter.
so mass of the sliver of gold = 19.32 * 0.678 = 13.098 (ans)