The perimeter of a triangle is 90 cm. The lengths of the sides of the triangle are in the ratios 3:5:7 Work out the length of th
1 answer:
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Answer: a. 55
Step-by-step explanation:
The formula to find the geometeric mean between two numbers a and b is given by :-
The given numbers are : 275 and 11
The geometric mean of 275 and 11 is given by :-
Hence, the geometric mean of 275 and 11 is 55.
So , the correct option is a. 55 .
Answer:
The perimeter of the figure = 9.5 cm
Step-by-step explanation:
<em>Note: You probably missed to add the figure, but after a little research I found and am attaching the figure. I have answered your question based on the reference of that figure. But, I hope you would learn the concept so that you could solve any question based on this concept. So, please check the figure.</em>
<em>Solution:</em>
The perimeter of the figure is the sum of all the sides of the given figure as shown in the attached figure.
So, here is the formula to calculate the perimeter.
<em>Perimeter </em>=<em> AB + DE + BC + AE + BC </em>
As AE + DC = 1 1/5 cm, AB = 1 3/4 cm, DE = 1 1/4 cm, and BC = 1 3/10 cm
Therefore,
<em>Perimeter</em> = 1 3/4 + 1 1/4 + 13/10 + 1 1/5 ∵ AE + BC = 1 1/5
= (130 + 110 + 52 + 88) / 40
= 380/40
= 9.5 cm
So, the perimeter of the figure is = 9.5 cm
Keywords: perimeter
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