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Svetlanka [38]
3 years ago
11

The present shown below is a cube. Find the surface area of the present.

Mathematics
2 answers:
lorasvet [3.4K]3 years ago
6 0

Answer:

2400

Step-by-step explanation:

agasfer [191]3 years ago
5 0

Answer:

2400cm²

Step-by-step explanation:

The formula for surface area of a cube is 6a² where a is the length of one side of the cube.

Given a=20 cm the surface area of the cube is ;

6*20²= 6*400=2400cm²

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Pls look i math pic i put and answer fast plssss i will mark u as brainliest
Lera25 [3.4K]

Answer:it’s 80ft hope this helps

Step-by-step explanation:

8 0
3 years ago
Solve x^2 + x - 12 = 0
bogdanovich [222]

Answer:

x₁ = -4

x₂ = 3

Step-by-step explanation:

x²+ x + 12 = 0

x = {-1±√((1²)-(4*1*-12))} / (2*1)

x = {-1±√(1+48)} / 2

x = {-1±√49} / 2

x = {-1±7} / 2

x₁ = {-1-7} / 2 = -8/2 = -4

x₂ = {-1+7} / 2 = 6/2 = 3

Check:

x₁

-4² + (-4) - 12 = 0

16 - 4 - 12 = 0

x₂

3² + 3 - 12 = 0

9 + 3 - 12 = 0

6 0
1 year ago
Find the minimum and maximum possible areas of a rectangle measuring 6 km by 11 km.
ExtremeBDS [4]
Assuming your numbers are rounded to the nearest km, the minimum area will be ...
  (5.5 km)·(10.5 km) = 57.75 km² . . . minimum

And the maximum area will be ...
  (6.5 km)·(11.5 km) = 74.75 km² . . . maximum

_____
When a number is rounded to 6 km as the nearest km, its value may actually be anywhere in the range 6 km ± 0.5 km. If you really want to get technical about it, the ranges of possible dimensions are [5.5, 6.5) km and [10.5, 11.5) km, and the range of possible areas is [57.75, 74.75) km².
3 0
3 years ago
The grocery store sells kumquats for $4.50 a pound and Asian pears for $3.75 a pound. Write an equation in standard form for the
Shtirlitz [24]
4.50k + 3.75p = 16 <== this would be ur equation
6 0
3 years ago
PLEASE HURRY WITH THIS
Snezhnost [94]

Answer:

Step-by-step explanation:

100.5 in ^2

5 0
3 years ago
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