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Find the area of ABC in which BC = 8cm, AC = 15cm and AB = 17 cm. Find the length of altitude drawn on AB.
It is given in the question that,
Sides or triangle ABC is:
BC = a = 8 cm
AC = b = 15 cm
AB = c = 17 cm
We know that,
Perimeter of triangle = Sum of all sides
= a + b + c
= 8 + 15 + 17
= 40 cm
∴ s =
= 20 cm
Area of =
= 60 cm2
Also, Area of triangle ABC =
120 = 17 × Height
= 7.06 cm
Hence, area of triangle is 60 cm2 and length of altitude is 7.06 cm
Given a ABC in which
I. A, B and C are in the ratio 3: 2 :1.
II. AB , AC and BC are in the ratio 3 : 3 : 2 3 and AB = 3 3 cm.
Is ABC a right triangle?
The question give above has two Statements I and II. Answer the questions by using instructions given below:
(a) If the question can be answered by one of the given statements only and not by the other.
(b) If the question can be answered by using either statement alone.
(c) If the question can be answered by using both the statements but cannot be answered by using either statement.
(d) If the question cannot be answered even by using both the statements together.