Question 1
1 Mark
The base of a right triangle is 8 cm and hypotenuse is 10 cm. Its area will be
Options
Option A is correct
24 cm²
Option B
40 cm²
Option C
48 cm²
Option D
80 cm²
Questions & Answers: "Herons Formula"
Complete guide to "Herons Formula" for Math students. Below you will find important questions and model answers to help you prepare.
10 Questions
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We are building a dedicated quiz for this topic, but you can test your skills on a similar concept: Number Systems - Practice Set 1 (NCERT Class 9).
Question 2
1 Mark
An isosceles right triangle has area 8 cm². The length of its hypotenuse is
Options
Option A is correct
Option B 
Option C 
Option D 
Question 3
1 Mark
The perimeter of an equilateral triangle is 60 m. The area is
Options
Option A 
Option B 
Option C 
Option D is correct
Question 4
1 Mark
The sides of a triangle are 56 cm, 60 cm and 52 cm long. Then the area of the triangle is
Options
Option A
1322 cm²
Option B
1311 cm²
Option C is correct
1344 cm²
Option D
1392 cm²
Question 5
1 Mark
The area of an equilateral triangle with side 2√3 cm is
Options
Option A is correct
5.196 cm²
Option B
0.866 cm²
Option C
3.496 cm²
Option D
1.732 cm²
Question 6
1 Mark
The length of each side of an equilateral triangle having an area of 9√3 cm² is
Options
Option A
8 cm
Option B
36 cm
Option C
4 cm
Option D is correct
6 cm
Question 7
1 Mark
If the area of an equilateral triangle is 16√3 cm², then the perimeter of the triangle is
Options
Option A
48 cm
Option B is correct
24 cm
Option C
12 cm
Option D
36 cm
Question 8
1 Mark
The sides of a triangle are 35 cm, 54 cm and 61 cm, respectively. The length of its longest altitude
Options
Option A
16√5 cm
Option B
10√5 cm
Option C is correct
24√5 cm
Option D
28 cm
Question 9
1 Mark
The area of an isosceles triangle having base 2 cm and the length of one of the equal sides 4 cm, is
Options
Option A is correct
Option B 
Option C 
Option D 
Question 10
1 Mark
The edges of a triangular board are 6 cm, 8 cm and 10 cm. The cost of painting it at the rate of 9 paise per cm² is
Options
Option A
Rs 2.00
Option B is correct
Rs 2.16
Option C
Rs 2.48
Option D
Rs 3.00