Question 5:- Q5. Which of the following is correct representation of a polynomial in one variable? a. The perimeter of a square whose side length is represented by the expression vy b. The area of a rectangle whose side lengths are represent by the expression 2*vy and vy 2 c. The perimeter of a rectangle whose side lengths are represented by the expression y2+vy and 5+vy d. The area of a square whose side length is represented by the expression 5 vy. Save & Next Save Answer
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Ncert solutions
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Mathematics
Chapters in NCERT Solutions - Mathematics, Class 6
Exercises in Mensuration
Question 31
Q16) What is the perimeter of each of the following figures? What do you infer from the answer?
(a)
(b)
(c)
(d)
Solution
Transcript
Solution:
(a) Perimeter of square = 4 x side
= 4 x 25 = 100 cm
(b) Perimeter of rectangle = 2 x (length + breadth)
= 2 x (40 + 10)
= 2 x 50 = 100 cm
(c) Perimeter of rectangle = 2 x (length + breadth)
= 2 x (30 + 20)
= 2 x 50 = 100 cm
(d)Perimeter of triangle = Sum of all sides
= 30 cm + 30 cm + 40 cm = 100 cm
Thus, all the figures have same perimeter.
In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant. As such, it generalizes a circle, which is the special type of ellipse in which the two focal points are the same. The elongation of an ellipse is measured by its eccentricity {\displaystyle e}e, a number ranging from {\displaystyle e=0}e=0 (the limiting case of a circle) to {\displaystyle e=1}e=1 (the limiting case of infinite elongation, no longer an ellipse but a parabola).