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The dimesions of a triangle have been enlarged by a scale factor of r Its new area is 9 times its original area What is the value of r?
Wiki User
∙ 8y ago
Area increase as the square of linear dimensions. So area is 9times means linear dimension increased to sqrt(9) = 3 times their original. ie r = 3
Wiki User
∙ 14y ago
Wiki User
∙ 8y ago3
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The multiplying factor when a shape is enlarged?
When a shape is enlarged the multiplying factor is greater than 1. Example : A factor of 7 means that a length of 1cm on the original shape would be represented by a length of 7cm on the enlarged shape.
The constant amount by which the dimensions of an object are enlarged or reduced is called?
Scale factor
When a rectangle is enlarged by a factor 2 what happens to its area?
uhhum i domt know
Cone X has a volume of 100cm cubed. Cone Y is an enlargement of Cone X by scale factor 2. Calculate the volume of cone Y?
Remember, that the scale for volume is always cubed..... so you would want to take 100 x 100 x 100 to find the enlarged volume. The volume of the enlarged cone would be 1,000,000 cm cubed The answer given is incorrect. In order to work out the enlarged volume, you should take the original volume and multiply this by the linear scale factor cubed. In this case, the correct answer would be 800cm cubed, arrived at by taking the original volume of 100cm. cubed, and multiplying by the scale factor (2) cubed; 2 x2 x2 = 8.
What are the coordinates of the vertices of triangle a'b'c' after triangle ABC is dilated using a scaling factor of 3?
Find the coordinates of the vertices of triangle a'b'c' after triangle ABC is dilated using the given scale factor then graph triangle ABC and its dilation A (1,1) B(1,3) C(3,1) scale factor 3
The multiplying factor when a shape is enlarged?
When a shape is enlarged the multiplying factor is greater than 1. Example : A factor of 7 means that a length of 1cm on the original shape would be represented by a length of 7cm on the enlarged shape.
When a triangle is enlarged by a factor 3 are the angles tripled in size?
No - if the lengths of the sides are all increased by a factor of 3, the angles remain unchanged. You just wind up with a "similar" triangle 3 times the size of the original. A quick counterexample would be to consider what would happen if the angles DID change. The sum of the angles in the original triangle should be 180°. If the angles in the new, larger triangle tripled in size, the sum of the angles in the bigger triangle would be 540° - but the sum of the angles of a triangle should always remain 180°.
What is 9 enlarged by a factor of a number?
9 enlarged by a factor of a number is 9*y
How do you find a scale factor from the smaller figure to the enlarged figure?
Look for corresponding parts of the two figures. Their ratio is the scale factor. For example, if you have two similar triangles, one has a side of length 3, and the corresponding side on the other triangle is 5, then the scale factor is 5/3 going from the small triangle to the big, or 3/5 going from the big triangle to the small.
If someone enlarged a drawing by a scale factor of 3 and got 396 cm squared what was the original drawing?
The scale factor is usually stated as a linear enlargement factor. Therefore, the area enlargement factor is the square of the scale factor, in this instance, 9. The area of the original drawing was thus 396/9 = 44 cm2.
How do you use the scale factor of a triangle to enlarge it?
The way you use a scale factor to enlarge a triangle is to multiply each side of the triangle by that scale factor. Your triangle will then be that many times larger.
Are the ratios of all three pairs of corresponding sides of similar triangles equal?
Yes. When a shape is enlarged the scale factor gives the ratio between corresponding lengths of the enlargement and the original.
What is the length of the hypotenuse of a right triangle where two sides are 16 units and 12 units long?
From the Pythagorean theorem, if the unknown hypotenuse is called h, h2 = 162 + 122, or h = sq rt (256 + 144) = 20 units. (This is a 3-4-5 triangle enlarged by a factor of 4.)
Show how to find scale factor of a small triangle to a larger similar triangle?
The ratio of the length of the side in the big triangle to the length of the corresponding side in the little triangle is the scale factor.
How do you find the scale factor of a triangle?
You find the scale factor on a triangle by dividing the short side by the long side.
Lorraine is making campaing postersthe original poster is 24 inches long by 18inches wideshe wants to enlarge the poster by a scale factor 1.75what are the dimensions of the enlarged poster?
42 x 31.5
The constant amount by which the dimensions of an object are enlarged or reduced is called?
Scale factor
