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Nikitich [7]
3 years ago
13

Find the area of a circle with a radius of 6 ft. Round off your answer to one decimal point. (The formula for the area of a circ

le is A = ar?)​
Mathematics
1 answer:
butalik [34]3 years ago
3 0

Answer:

Using 3.14   for pi  A = 113.0  ft^2

Using the pi button A = 113.1 ft^2

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

A = pi ( 6)^2

A = 36 pi

Using 3.14 for an approximation for pi

A = 36(3.14) = 113.04

To 1 decimal

113.0

Using the pi button

A = 113.0973355

A = 113.1

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From a square piece of cardboard paper of area size 9 m2 , squares of the same size are cut off from each corner of the paper. T
levacccp [35]

Answer:

Max vol = 2 cubic metres

Step-by-step explanation:

Given that from a square piece of cardboard paper of area size 9 m2 , squares of the same size are cut off from each corner of the paper.

Side of the square = 3m

If squares are to be cut from the corners of the cardboard we have the dimensions of the box as

3-2x, 3-2x and x.

Hence x can never be greater than or equal to 1.5

V(x) = Volume = V(x) = x(3-2x)^2\\= 9x+4x^3-12x^2

We use derivative test to find the maxima

V'(x) = 9+12x^2-24x\\V"(x) = 24x-24\\

Equate I derivative to 0

9+12x^2-24x=0\\x=1/2,3/2

If x= 3/2 box will have 0 volume

So this is ignored

V"(1/2) <0

So maximum when x =1/2

Maximum volume

=9(1/2)+4(1/2)^3-12(1/2)^2\\=2 cubic metres

6 0
3 years ago
248.92 x 10 to 4th power
Karo-lina-s [1.5K]

Answer:

2489200

Step-by-step explanation:

First you have 248.92. You also have 10^4

Your equation should look like 248.92 * 10^4

Calculate using a calculator and you should arrive at the answer 2,489,200.

7 0
3 years ago
Read 2 more answers
Look at this graph:
Black_prince [1.1K]

Answer:

3/2

Step-by-step explanation:

slope=rise/run=30/20=3/2

3 0
3 years ago
A right triangular prism has a height of 26 cm and base edges of 10 cm, 24 cm, and 26 cm. What is the lateral area of the prism?
horrorfan [7]
The lateral area is 1560 cm².

The lateral area is the area of the lateral faces (the faces that are not bases).  The dimensions of these are:
24 by 26
10 by 26
26 by 26

These are all rectangles.  The area of each rectangle is given by length * width:
24*26 = 624
10*26 = 260
26*26 =676

624+260+676=1560
3 0
3 years ago
What is 28% of 50? <br><br> SHOW YOUR WORK PLEASE!
miv72 [106K]

Answer:

14

Step-by-step explanation:

.28 times 50 equals 14

7 0
3 years ago
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