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  • Class 9 Maths Study Material

An Educational platform for Preparation and Practice Class 9. Kidsfront provide unique pattern of learning Maths with free online comprehensive study material in the form of QUESTION & ANSWER for each Chapter of Maths for Class 9. This study material help Class 9, Maths students in learning every aspect of Heron s formula. Students can understand Heron s formula concept easily and consolidate their learning by doing Online Practice Tests on Maths,Heron s formula chapter repeatedly till they excel in Class 9, Heron s formula. Free ONLINE PRACTICE TESTS on Class 9, Heron s formula comprise of Hundreds of Questions on Heron s formula, prepared by the highly professionals team. Every repeat test of Heron s formula will have new set of questions and help students to prepare themselves for exams by doing unlimited Online Test exercise on Heron s formula. Attempt ONLINE TEST on Class 9,Maths,Heron s formula in Academics section after completing this Heron s formula Question Answer Exercise.

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Heron s formula
A square and a rectangle have equal perimeters. If the diagonal of the square is 12 2 cm then the area of the triangle is

a) 32√2
b) 24√3
c) 48√3
d) 64√3

Correct Answer Is : 48√3
Solution Is :
The sides of a triangle are 11m, 60m and 61m. The altitude to the smallest side is

a)     15m 
b)     62m 
c)    60m
d)     55m

Correct Answer Is :     62m 
Solution Is :
The perimeter of a triangle is 144m and the ratio of the sides is 3:4:5, then the area of the triangle is

a) 934cm2
b)         864cm2
c)         824cm2
d)         784cm2

Correct Answer Is : 934cm2
Solution Is :
Given a triangle, with an area of 8.94cm2 a perimeter of 16cm and side lengths AB = 3cm and CA = 7cm, what is the length of side BC?

a)     8cm 
b)     9cm 
c)    6cm
d)     5cm

Correct Answer Is :     9cm 
Solution Is :
If the perimeter of a triangle is 26 cm, its area is 18.7cm2, and the lengths of AB = 12cm and BC = 4cm, what is the length of the third side, side CA?

a)     6cm 
b)     10cm 
c)    14cm
d)     12cm

Correct Answer Is :     6cm 
Solution Is :
A square and an equilateral triangle have equal perimeters. If the diagonal of the square is 12 2 cm then the area of the triangle is

a)     24cm 
b)     48cm 
c)    24 √3
d)     64 √3

Correct Answer Is :    24 √3
Solution Is :
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