The area of a rectangle is 42 milimeter .The length is 7 milimeters. What is the perimter of rectangel?
2 answers:
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Given that the triangles are similar.
When triangles are similar, all three pairs of corresponding sides are in the same ratio.
Similarly in the given triangles, the ratio of the corresponding sides are equal.
Cross multiplying, we get
Dividing both sides of the equation by -4.
So, we get
x = 7.
The radius of a circle is always half of the diameter of the circle. In this case, the diameter is 
, meaning that when we halve , we will get our radius. Therefore, the radius of the circle is 
. Hope this has helped you understand and have a great day!