Answer:
x=20
The side lengths form a 345 triple
Step-by-step explanation:
345 triangles have 3, 4, and 5 as their lengths
If we divide all of them by 4 we get..
12/4=3 and 16/4=4 that means we are missing 5
5*4=20
Answer:
The radius of the base is
Step-by-step explanation:
we know that
The volume of a cone is equal to
we have
substitute and solve for r
Which problem do you want solved ?
ANSWER
EXPLANATION
The given expression is
We identity and remove the perfect squares to obtain
We now observe that, the three terms are all similar.
We combine the similar terms to get:
Answer:
Angle B = 106.6 degrees
Step-by-step explanation:
b^2= a^2+c^2-2*a*c*cosB
9*9 = 4*4 + 7*7 - 2*7*4*cosB
81= 16+49-56cosB Subtract 16 and 49 from both sides
16= -56cosB Divide by -56 on both sides.
cosB= -16/56 Take the arccosine of both sides
B=arccos(-16/56)
B= 106.6