Answer:
r =
Step-by-step explanation:
The distance from the centre to a point on the circle is the radius r
Calculate r using the distance formula
r =
with (x₁, y₁ ) = (0, 0 ) and (x₂, y₂ ) = (2, 5 )
r =
=
=
=
We know that
<span>The nine radii of a regular Nonagon divides into 9 congruent isosceles triangles
</span>therefore
[the area of <span>a regular nonagon]=9*[area of isosceles triangle]
</span>[area of isosceles triangle]=b*h/2------> 15*20.6/2----> 154.5 cm²
so
[the area of a regular nonagon]=9*[154.5]------> 1390.5 cm²
the answer is
1390.5 cm²
Answer:
7,600
Step-by-step explanation:
both parents invest 7,600.
7,600x2= 15,200
there are 2 girls so divide 15,200 by 2 and u get 7,600
Answer:
Step-by-step explanation:
Hello.
to find the volume of a sphere we must know its radius,
we don't know the radius but we have the area
Now, replacing this value in the volume equation
have a great day
Answer:
f(x) = 3x + 6.
Step-by-step explanation:
f(7) - f(0) = 27 - 6 = 21
so we may write a function:
f(x) = 3x + 6.