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3 years ago

How is finding the area of a parallelogram like finding the area of two congruent triangles?

1 answer:

4 0

If you look at either diagonal (line joining opposite angles) it forms 2 triangles that are identical, both in size and shape, but that are in different positions. So by finding the area of one using base x height ÷ 2, and then adding them together, you get the area of the polygon.
However, you will find that that would be the same as just doing base x height, so the area of a parallelogram is just that.

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Length of the aquarium is 35 yd

Step-by-step explanation:

Step 1: Volume of the aquarium = 210 yd³ given by Volume = length × width × height. Width = 3 yd and Height = 2 yd

Length = Volume/Width × Height

= 210/3 × 2 = 210/6

= 35 yd

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3 years ago

Read 2 more answers

[someone help] The speed of the object 7 seconds after it is dropped is ___m/sec

nadezda [96]

9514 1404 393

Answer:

68.6 m/s

Step-by-step explanation:

The speed at a given time is the derivative of the height at that time.

dh/dt = -9.8t

At t=7, the speed is ...

-9.8(7) = -68.6 . . . . . meters per second (downward)

The speed is 68.6 meters per second.

_____

Additional comment

Height is considered to be positive in the up direction, so velocity and acceleration are also positive in the up direction. The derivative of height will be the velocity. Its negative sign in this case indicates the object is moving in the downward direction. The speed is the magnitude (absolute value) of the velocity.

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