All categories

3 years ago

What is the area of a circle with a radius of 4 ft? ft² (Use 3.14 for Pi.)

Mathematics

1 answer:

MA_775_DIABLO [31]3 years ago

8 0

Answer:

A≈50.27ft²

Step-by-step explanation:

You might be interested in

Help plz will mark brainliest.

vodomira [7]

Tan M = opposite / adjacent
tan M = KL / KM
tan M = 15/8

Letter C

7 0

3 years ago

Two long strips of paper are each 2 inches wide, and they overlap so that the angle between the strips is 30 degrees. What is th

horrorfan [7]

Answer:

2inch^2 is our area overlap

Step-by-step explanation:

2 inch base 2 inch width when crossed shows us symmetrical line on the parallel, which gives us our height of 1 inch as one inch equilateral triangle is formed each side of the symmetrical line.

Formula for Area is bh

Area = 1 x 2 = 2inch^2

6 0

3 years ago

A spherical balloon is inflating with helium at a rate of 64 pi StartFraction ft cubed Over min EndFraction . How fast is the b

olga2289 [7]

Answer:

The radius of the balloon is increasing at a rate of 4 feet per minute.

Step-by-step explanation:

We are given the following in the question:

$\dfrac{dV}{dt} = 64\pi \dfrac{\text{ ft}^3}{\text{min}}$

Volume of sphere is given by

$V = \dfrac{4}{3}\pi r^3$

where r is the radius of the balloon.

Instant radius, r = 2 ft

Rate of change of volume =

$\dfrac{dV}{dt} = \dfrac{d}{dt}(\dfrac{4}{3}\pi r^3)\\\\\dfrac{dV}{dt} =4\pi r^2\dfrac{dr}{dt}$

Putting values, we get,

$64\pi = 4\pi (2)^2\dfrac{dr}{dt}\\\\\Rightarrow \dfrac{dr}{dt} = 4$

Thus, the radius of the balloon is increasing at a rate of 4 feet per minute.

5 0

3 years ago

Simplify the expression x^2-xy

OlgaM077 [116]

Answer:

The correct answer is (x-y)

Step-by-step explanation:

x^2-xy

x(x-y)

3 0

3 years ago

A man buys a jacket birr 300 before VAT what is the VAT and the total cost?

Novosadov [1.4K]

Base price=300
Let VAT be x%

Now

Total VAT=0.x(300)

Total cost:-

300+300(0.x)

7 0

2 years ago