4 years ago

Hat is the surface area of a sphere with a diameter of 16 cm

1 answer:

6 0

A sphere<span> is a three-dimensional space, such as the shape of a football. A sphere is a body bounded by a surface whose every point is equidistant (i.e. the same distance) from a fixed point, called the center or the origin of the sphere.</span>

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A sector has angle 2.5 radians and perimeter of 18cm. find the radius of the sector

babunello [35]

Answer:

4 cm

Step-by-step explanation:

Perimeter = 18cm

θ = 2.5 radian

s = rθ, s = Arc length

Perimeter of Sector, P = arc length, s + 2r

Perimeter = rθ + 2r

r = Radius

18cm = r(2.5) + 2r

18cm = 2.5r + 2r

18cm = 4.5r

r = 18 /4.5

r = 4

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3 years ago

Solve: -2/3a - 6 = 12 <br>a =

Anika [276]

Answer: -27 is the correct answer. (apparently)

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3 years ago

Let u=<-5,2>, v=<-2,6>. Find 4u+3v.

charle [14.2K]

Answer:

$\large\boxed{4\vec{u}+3\vec{v}=}$

Step-by-step explanation:

$\vec{u}=;\ \vec{v}=\\\\4\vec{u}==\\\\3\vec{v}==\\\\4\vec{u}+3\vec{v}=+==$

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3 years ago

A cylinder has a base diameter of 16 feet and a height of 19 feet. What is its volume in cubic feet, to the nearest tenths place

qaws [65]

Answer:

3820.18

Step-by-step explanation:

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3 years ago

Annie has al metre piece of wire.

KIM [24]

Answer:

wire left for square = 100 - (14+14+4+4) cm

= (100 - 36) cm

= 64 cm

side of square = 64/4 = 16 cm

3 0

3 years ago