3 years ago

Work out the surface area of a cuboid 3cm by 3cm by 4cm?

Mathematics

2 answers:

drek231 [11]3 years ago

8 0

Answer:

It was 36 cm3

Step-by-step explanation:

3cm x 3 cm x 4 cm

=36 cm3

Gre4nikov [31]3 years ago

4 0

Answer: 14 cm

Step-by-step explanation:

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A moterboat that ravels with a speen of 20km/hour in still water has traveld 20 km against the current and 180km with the curren

Ira Lisetskai [31]

Answer:

10 kph

Step-by-step explanation:

Find the speed of the current of the river.

20/(20 - c) + 180/(20 + c) = 8

20(20 + c) + 180(20 - c) = 8(400 - c^2)

8c^2 - 160c + 800 = 0

8(c^2 - 20c + 100) = 0

8(c - 10)^2 = 0

c = 10

The speed of the current of the river is 10 km/hour.

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2 years ago

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Mr. Shively’s TV cabinet is 30 inches tall and 40 inches wide. Best Buy is selling 50 inch, 55 inch, 60 inch, and 65 inch TVs. O

Simora [160]

Answer:

He should buy a 50 inch TV

Step-by-step explanation:

Using Pythagorean theorem the TV cabinet has a diagonal of :

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2 years ago

Factor the expression.<br> = 28x– 14

Veseljchak [2.6K]

Answer:

14(2×-1) is the factorization of this expression

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2 years ago

Find the new area 20ft and 10 ft. Perimeter 48cm2 p=?

Scrat [10]

Answer:

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3 years ago

°The angle measurements in the diagram are represented by the following expressions.

stiks02 [169]

Step-by-step explanation:

8x-10=3x+90

=5x=100

=x=20

therefore

B=3(20)+90

150°

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2 years ago