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Strike441 [17]
3 years ago
13

A cube has a area of 81cm squared find its volume​

Mathematics
2 answers:
vladimir1956 [14]3 years ago
4 0

Answer:

Area of one face of a cube = 81 sq cm.

Hence, each side of the cube = 81^0.5 = 9 cm.

So volume of the cube = 9^3 = 729 cm^3

Step-by-step explanation:

Alik [6]3 years ago
4 0

Step-by-step explanation:

Area of face of a cube = 81 cm squared

So area of face = a x a = 81

A^2 = 81

A= 9

So side = 9cm

So volume of a cube = side x side x side = side ^3

= 9x 9 x9 = 729

So Volume = 729 cm^3

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Elena L [17]

Answer:

The correct answer is B 22/25

Step-by-step explanation:

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7 0
2 years ago
A football quarterback enjoys practicing his long passes over 40 yards. He misses the first pass 40% of the time. When he misses
dangina [55]

Answer:

8% or 0.08

Step-by-step explanation:

Probability of missing the first pass = 40% = 0.40

Probability of missing the second pass = 20% = 0.20

We have to find the probability that he misses both the passes. Since the two passes are independent of each other, the probability that he misses two passes will be:

Probability of missing 1st pass x Probability of missing 2nd pass

i.e.

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Thus, there is 8% probability that he misses two passes in a row.

5 0
3 years ago
Read 2 more answers
Find the area of triangle DEF with vertices D(-1,2), E(3,-2) and F(-2,-2).*
Veronika [31]

Answer:

<em>The area of the triangle DEF is 10.</em>

Step-by-step explanation:

<u>Area of a Triangle:</u>

A triangle of base B and height H (both must be perpendicular) has an area of:

\displaystyle A=\frac{BH}{2}

The image below shows the triangle formed by the points DEF. It's important to notice the points E and F lie on the same horizontal line because they both have the same y-coordinate.

This fact simplifies the calculations since we can easily compute the length the of base as the difference of their x-coordinates:

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Being the base of a horizontal line, the height of the triangle can be calculated as the difference of y-coordinates of D and the height of that line.

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With these two values, we calculate the area:

\displaystyle A=\frac{5*4}{2}=10

The area of the triangle DEF is 10.

4 0
3 years ago
( - 37 + 37 ) ÷ - 15 = What is the answerr​
Eduardwww [97]

Answer:

0

Step-by-step explanation:

~~~(-37+37 )\div(-15)\\\\=0\div (-15)\\\\=0

5 0
2 years ago
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Alina [70]
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