underline the verb do elephants have a good memory
Answers
Answer:
verb Is Elephants have a good memory .
Answer:
Have Is A Verb
Ncert solutions
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Mathematics
Science
Chapters in NCERT Solutions - Mathematics, Class 7
Exercises in The Triangle and its properties
Question 10
Q4) Which of the following can be the sides of a right triangle?
(i) 2.5 cm,6.5 cm, 6 cm.
(ii) 2 cm, 2 cm, 5 cm.
(iii) 1.5 cm, 2cm, 2.5 cm.
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Solution 4:
Let the larger side be the hypotenuse and also using pythagoras theorm,
(i) In triangle ABC
\left(AC\right)^2\ =\ \left(AB\right)^2\ +\ \left(BC\right)^2(AC)
2
= (AB)
2
+ (BC)
2
\left(6.5\right)^2\ =\ \left(6\right)^2\ +\ \left(2.5\right)^2(6.5)
2
= (6)
2
+ (2.5)
2
42.25\ =\ 36\ +\ 6.2542.25 = 36 + 6.25
42.25\ =\ 42.25\42.25 = 42.25
LHS = RHS
Therefore, given sides are of the right angled triangle.
(ii) In triangle ABC,
\left(AC\right)^2\ =\ \left(AB\right)^2\ +\ \left(BC\right)^2(AC)
2
= (AB)
2
+ (BC)
2
\left(5\right)^2\ =\ \left(2\right)^2\ +\ \left(2\right)^2(5)
2
= (2)
2
+ (2)
2
25 = 4+4
25 = 8
LHS\ \ne RHS\LHS
=RHS
Therefore, the given sides are not of the right angled triangle.
(iii) In triangle ABC,
\left(AC\right)^2\ =\ \left(AB\right)^2\ +\ \left(BC\right)^2(AC)
2
= (AB)
2
+ (BC)
2
\left(2.5\right)^2=\ \left(2\right)^2\ +\ \left(1.5\right)^2(2.5)
2
= (2)
2
+ (1.5)
2
6.25 = 4 +2.25
6.25 = 6.25
LHS = RHS
therefore, the given sides are of the right angled triangle.
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