Find the area of a triangle whose sides measure 13 cm, 14 cm and 15 cm. Options: A . &nbsp66 B . &nbsp72 C . &nbsp76 D . &nbsp84

Find the area of a tri

Question

Find the area of a triangle whose sides measure 13 cm, 14 cm and 15 cm.

Options:

A . 66

B . 72

C . 76

D . 84

Answer: Option D

Let a = 13, b = 14 and c = 15.
S = (1/2)(a + b + c) = 21.
(s- a) = 8, (s - b) = 7 and (s - c) = 6.
Area = (s(s- a) (s - b)(s - c))^(1/2) = (21 *8 * 7*6)^(1/2) = 84 cm²

Was this answer helpful ?

Next Question

Submit Comment/FeedBack

More Questions on This Topic :

Question 1. An error 2% in excess is made while measuring the side of a square. The percentage of error in the calculated area of t....in the calculated area of the square is:

Question 2. A man walked diagonally across a square lot. Approximately, what was the percent saved by not walking along the edges? ....percent saved by not walking along the edges?

Question 3. A tank is 25 m long, 12 m wide and 6 m deep. The cost of plastering its walls and bottom at 75 paise per sq. m, is: ....

Question 4. A rectangular field has to be fenced on three sides leaving a....

Question 5. The ratio between the length and the breadth of a rectangular park is 3 : 2. If a man cycling along the boundary of the ....then the area of the park (in sq. m) is:

Question 6. The ratio between the perimeter and the breadth of a rectangle is 5 : 1. If the area of the rectangle is 216 sq. cm, wha....216 sq. cm, what is the length of the rectangle?

Question 7. An error 2% in excess is made while measuring the side of a square. The percentage of error in the calculated area of th....of error in the calculated area of the square is:

Question 8. The percentage increase in the area of a rectangle, if each of its sides is increased by 20% is:....

Question 9. A rectangular park 60 m long and 40 m wide has two concrete crossroads running in the middle of the park and rest of the....sq. m, then what is the width of the road?

Question 10. The diagonal of the floor of a rectangular closet is 7 feet. The shorter side of the closet is 4 feet. What is the area ....What is the area of the closet in square feet?

Latest Videos

Chapter 1 - GLOBAL STEEL SCENARIO & INDI Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)

Direction Sense Test Part 1 Reasoning (Hindi)

Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE

Cube & Cuboid Part 1 Reasoning (Hindi)

Data Interpretation (DI) Basic Concept Reasoning (Hindi)

Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)

Sail E0 free webinar Webinars

Real Numbers Part 7 Class 10 Maths

Real Numbers Part 1 Class 10 Maths

Polynomials Part 1 Class 10 Maths

Latest Test Papers

Chapter 3.1 : Overview of Finance & Acco Chapter 3 : Finance & Accounts SAIL E0 - GFM 2024

Chapter 2.1 : Overview Chapter 2 : Materials Management SAIL E0 - GFM 2024

Chapter 1.1 : Personnel Functions- An ov Chapter 1 : Personnel Management SAIL E0 - GFM 2024

GPOE / GPA Combined 1 Free CBT Mock Test SAIL E0 2024

CBT Mixed Test 1 GPOE/GPA SAIL E0 2024

Menu

Popular Courses

Search

Submit Comment/FeedBack

More Questions on This Topic :

Latest Videos

Latest Test Papers