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melamori03 [73]
3 years ago
5

Trent Ordered a pizza. The circumference of the pizza is 25.12 inches. The radius of the pizza is 4 inches, trent understands th

at pi is the ratio of the circumference compared to the diameter. So trent says that pi =23.12/4, is he correct, explain your work
Mathematics
1 answer:
Vinil7 [7]3 years ago
5 0

Answer:

Trent is wrong.

This is because:

π = 25.12/2 × 5

π = 25.12/8

Step-by-step explanation:

A pizza is circular is shape, the formula for the circumference of a circle is :

C = 2× π × r

Making π the subject of the formula

π = C/2r

The circumference of the pizza is 25.12 inches. The radius of the pizza is 4 inches,

Hence:

π = 25.12 inches/ 2 × 4 inches

π = 25.12/8

From the calculation above, Trent is wrong.

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The Sahara Desert has an area of approximately 9,400,400 km2. While estimates of its average depth vary, they center around 150
dolphi86 [110]

Answer:

1.128048 \times 10^{25} grains of sand are in the Sahara Desert

Step-by-step explanation:

Given :

The Sahara Desert has an area of approximately 9,400,400 sq.km.

Depth = 150 m

To Find :Approximately how many grains of sand are in the Sahara Desert?

Solution:

Area of Sahara desert = 9,400,400 sq.km.

1 km^2 = 1000000 m^2

So, 9,400,400 km^2 = 1000000 \times 9400400 m^2

9,400,400 km^2 =9.4004 \times 10^{12}m^2

Volume of sand =Area \times depth

                           =1.41006\times 10^{15} m^3

1 m ^3 = 1000000 cm^3

So, 1.41006\times 10^{15} m^3 = 1.41006\times 10^{15} \times 1000000cm^3

1.41006\times 10^{15} m^3 =1.41006 \times 10^{21}cm^3

1 cubic cm holds grains of sand = 8000

1.41006 \times 10^{21}cm^3 holds grains of sand = 1.41006 \times 10^{21} \times 8000

                                                                                    = 1.128048 \times 10^{25}

Hence 1.128048 \times 10^{25} grains of sand are in the Sahara Desert

7 0
3 years ago
Pls help rlly easy xx
liberstina [14]

Answer:

divide both sides by 5c

\frac{p + q}{5c}

7 0
3 years ago
Read 2 more answers
After an 8% increase in your wages you receive $0.94 more per hour. About how much did you receive per hour before the increase
frez [133]
$0.87 your wages initially
4 0
3 years ago
Use a sum or difference formula to find the exact value of the trigonometric function. sine startfraction 7 pi over 12 endfracti
VARVARA [1.3K]
We have that
<span>sin (7π/12)=?

we know that
</span>7π/12=(π/4+π/3)
and 
<span><span>sin<span>(A+B)</span>=sin<span>(A)</span>cos<span>(B)</span>+cos<span>(A)</span>sin<span>(B)

then
</span></span>sin(π/4+π/3)=sin(π/4)cos(π/3)+cos(π/4)sin(π/3)
sin(π/4+π/3)=(√2/2)(1/2)+(√2/2)(√3/2)-------> (√2/4)+(√6/4)---> (√2+√6)/4

the answer is (√2+√6)/4

</span>
4 0
3 years ago
BRAINLIEST ANSWER (please answer)
ozzi

Answer:

0.20p + 7 = 0.30p + 5

Step-by-step explanation:

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5 0
3 years ago
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