Ask question

Ask question

All categories

2 years ago

10

ANSWR NOW PLZ I WILL GIVE BRAIN THINGY! Write and simplify an expression for the exact area of the circular object and Find the

area of the circular object, using 3.14 for π (7cm diameter)
(and a pic just in case)

1 answer:

rewona [7]2 years ago

7 0

Answer:

Lol sorry I didnt fully process it the area is 39.25 cm^2

Step-by-step explanation:

a = πr²

a=3.14(3.5^2

3.14(12.5)

39.25

You might be interested in

Suppose the radius of a circle is 2. What is its circumference?

Scilla [17]

Answer:

12.57

Step-by-step explanation:

The formula to solve the circumference of a circle is:

2 x PI x R (radius)

=> 2 x PI x 2

=> 4 PI or 12.57

4 0

3 years ago

the empire state building is 1250 feet tall. IF an object is thrown upward from the top of the building at an initial velocity o

ss7ja [257]

Answer:

Time for the object to get h(max) s = 1.1875 sec

h (max) = 1272.57 feet

Down time for the object to hit the ground = 4.25 sec

Step-by-step explanation:

The relation

h(s) = - 16*s² + 38* s + 1250 (1)

Is equivalent to the equation for vertical shot

Δh = V(i)*t - 1/2g*t² (in this case we don´t have independent term since the shot is from ground level. We can see in (1), the independent term is 1250 feet ( the height of the empire state building), the starting point of the movement.

The description of the movement is:

V(s) = V(i) - g*s ⇒ V(s) = 38 - 32*s

At h(max) V(s) = 0 38/32 = s

So the maximum height is at s = t = 1.1875 sec

The time for the object to pass for starting point is the same

t = 1.1875 sec

h(max) is

h(max) = - 16* (1.1875)² + 38 (1.1875) + 1250

h(max) = - 22,56 + 45.13 + 1250

h(max) = 1272.57 feet

Time for the object to hit the ground is

h(s) = - 1250 feet

-1250 = - 16 s² + 38*s + 1250

-16s² + 38s = 0

s ( -16s + 38 ) = 0

First solution for that second degree equation is x = 0 which we dismiss

then

( -16s + 38 ) = 0 ⇒ 16s = 38 s = 38/16

s = 2.375 sec and we have to add time between h (max) and to get to starting point ( 1. 1875 sec)

total time is = 2.375 + 1.875

Total time = 4.25 sec

4 0

2 years ago

Evaluate the Expression B^2-4 ac given by that a = -2 ,, b= -2 and c =2

Lapatulllka [165]

F* you B*!!!!!! Your so S*! That's the easiest thing in the world!!

4 0

3 years ago

There are 3 feet in a yard. How many yards, as a mixed number, will you drive until you reach this exit?

Ratling [72]

The number of yards, as a mixed number, will you drive until you reach this exit is 333 1/3 yards

<h3>How to determine the number of yards to drive?</h3>

The complete question is added as an attachment

From the attached figure, we have:

Exit = 1000 feet

From the question, we have

3 feet = 1 yard

So, the number of yards is

Number of yard =Exit/3 yards

This gives

Number of yard = 1000/3 yards

Evaluate the quotient

Number of yard = 333 1/3 yards

Hence, the number of yards, as a mixed number, will you drive until you reach this exit is 333 1/3 yards

Read more about mixed numbers at:

brainly.com/question/1746829

#SPJ1

6 0

1 year ago

Order these numbers from least to greatest

pantera1 [17]

Answer:

8 5/6 -> 8.839 -> 177/20 -> 8.99

Step-by-step explanation:

8 5/6 = 8.333

8.839

177/20 = 8.85

8.99

8 0

2 years ago