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lisabon 2012 [21]
3 years ago
10

A rectangle is 3 times as wide as it is long if x=10 what's the perimeter

Mathematics
1 answer:
Alex3 years ago
5 0

Answer:

80 units if the length is equal to x (it is unspecified)

Step-by-step explanation:

Assuming that the length is equal to x, then we know that the length is 10 units long because x = 10.

Since the width is 3 times longer than the length, we can also find that the width is 30 units long because 3 x 10 = 30.

Now, we can use the perimeter formula to find the perimeter of the rectangle.

The perimeter formula is P = 2 ( L + W ), with L being length and W being width.

Let's just substitute the numbers to find perimeter.

P = 2 ( 10 + 30 )

P = 2 ( 40 )

P = 80

So, the perimeter is 80 units.

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The formula of the area of a triangle is bh/2: the height is given as 6cm, the base is 4cm /2 (after you cut it in half) and so is 2 cm. Since the edges can be cut into two, there are 8 right angled triangles at the edges in total.

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Step-by-step explanation:

13:6

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