Which side lengths form a triangle that is similar to triangle ABC

Side lengths form a triangle that is similar to triangle ABC are 30, 21, 45 and this can be determined by using the given data.

Given :

The following steps can be used in order to determine the side lengths form a triangle that is similar to triangle ABC:

Step 1 - First determine the ratio of the length of AB and AC.

   --- (1)

Step 2 - Now, determine the ratio of the length of AC and BC.

 --- (2)

Step 3 - Determine the ratio of the length of BC and AB.

  --- (3)

Step 4 - Now, check the ratio of the side lengths given in option A).

          (Similar to expression 3)

          (Similar to expression 2)

          (Similar to expression 1)

Therefore, the correct option is A).

For more information, refer to the link given below:

link

A.

Step-by-step explanation:

Bc if you multiply every side by 3 you get the answer choices in answer A.

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step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2

3; 9 is 8 to -4

step-by-step explanation: