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aleksley [76]
3 years ago
14

An envelope is 7 inches long and 3 inches wide.What is the area of the envelope surface?​

Mathematics
2 answers:
SOVA2 [1]3 years ago
5 0

Answer:

21 in^2

Step-by-step explanation:

Area = Width * Length

Area = 3 * 7

Area = 21

Gekata [30.6K]3 years ago
4 0

Answer:

11. 2/3 inches squared.

Step-by-step explanation:

(3.1/3 * 3.1/2 = 10/3 * 7/2 = 70/6 = 11. 2/3)

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3.5 meters

Step-by-step explanation:

70/2=3.5 meters

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3 years ago
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1. Find the surface area for the given prism. (11<br> 8 in.<br> 10 in.<br> 14 in,
DedPeter [7]

Answer:

SA = 664 square inches

Step-by-step explanation:

Surface area is the area of all the sides added together.  A prism has six sides.

Take the dimensions and change them so each of the numbers are multiplied with the others.

14 * 10 * 8

14 * 10 = 140

14 * 8 = 112

10 * 8 = 80

Multiply each answer by 2 because there are two sides that have the same dimensions.

14 * 10 = 140 * 2 = 280

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5 0
3 years ago
YESSS love struggling 7th grade math problem ......... help me
Dimas [21]

Answer:

x = 20

ABC = 85

BCA = 81

CAB = 14

Step-by-step explanation:

I answered your other question, so basically just read the explanation there cuz I'm too lazy to write it again :P

4 0
3 years ago
In a batch of 890 calculators, 12 were found to be defective. What is the probability that a calculator chosen at random will be
jarptica [38.1K]
890 times 12 equals 10680
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3 years ago
What is the volume of a cube 1 1/2 inches wide 2 1/2 inches long and 4 inches high?
mel-nik [20]

Answer:

231

Step-by-step explanation:

first of all it must be a cuboid bcoz a cube's edge is same i.e length =breadth= height.

now volume of cuboid =lbh

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=231

ans....

6 0
3 years ago
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