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Title: Ch-12 Sample question paper (HERONS FORMULA)
Description: In this you will find different type of typical question, which have already come in cbse exame of class 9
Description: In this you will find different type of typical question, which have already come in cbse exame of class 9
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CH- 12 HERON’S FORMULA
SAMPLE QUESTION PAPER (part-1)
BASED ON EX- 1
...
Find the area of triangle whose sides are 150 cm, 120 cm, 200 cm
...
The perimeter of an isosceles triangle is 42 cm and its base 3/2 times each of the
equal sides
...
Q3
...
Also, find the
smallest of its altitude
...
Area of triangle
Using heron’s formula
√s(s-a)(s-b)(s-c)
A=150cm
B=120cm
C=200cm
S= a + b + c*1/2
S=150+120+200/2
S= 470/2
S=235cm
√235(235-150)(235-120)(235-200)
√235(85)(115)(35)
√47*5*17*5*23*5*7*5
5*5√47*17*23*7
25√128639 cm sq
...
66 cm sq
...
56 cm sq
...
in simpler form)
(take two similar nos
...
66)
Ans2
...
27*2
...
= 71
...
Now find the height
Let height be h
Area of triangle= ½* b* h
71
...
55=9*h
H=71
...
95cm
Ans3
...
(take the nos
...
out of root)
(base = 3/2x = 18cm)
(take two similar nos
...
24 cm=h
H= 53
Title: Ch-12 Sample question paper (HERONS FORMULA)
Description: In this you will find different type of typical question, which have already come in cbse exame of class 9
Description: In this you will find different type of typical question, which have already come in cbse exame of class 9