English

Find the area of the following triangle:

Advertisements
Advertisements

Question

Find the area of the following triangle:

Sum
Advertisements

Solution

Area of ​​triangle = `1/2 xx "Base" xx "Height" `

Base = 4 cm

Height = 3 cm

Area = `1/2 xx 4 xx 3`

= `12/2`

= 6 cm2

shaalaa.com
  Is there an error in this question or solution?
Chapter 9: Perimeter and Area - EXERCISE 9.1 [Page 151]

APPEARS IN

NCERT Mathematics [English] Class 7
Chapter 9 Perimeter and Area
EXERCISE 9.1 | Q 2. (a) | Page 151

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

If the points A(x, 2), B(−3, −4) and C(7, − 5) are collinear, then the value of x is:

(A) −63
(B) 63
(C) 60
(D) −60


If A(4, –6), B(3, –2) and C(5, 2) are the vertices of ∆ABC, then verify the fact that a median of a triangle ABC divides it into two triangle of equal areas.


Find the area of the quadrilateral whose vertices, taken in order, are (–4, –2), (–3, –5), (3, –2) and (2, 3).


The class X students of a secondary school in Krishinagar have been allotted a rectangular plot of land for their gardening activity. Saplings of Gulmohar are planted on the boundary at a distance of 1 m from each other. There is a triangular grassy lawn in the plot as shown in the following figure. The students are to sow seeds of flowering plants on the remaining area of the plot.

(i) Taking A as origin, find the coordinates of the vertices of the triangle.

(ii) What will be the coordinates of the vertices of Δ PQR if C is the origin?

Also calculate the areas of the triangles in these cases. What do you observe?


If area of triangle is 35 sq. units with vertices (2, −6), (5, 4) and (k, 4), then k is ______.


Find the area of the quadrilaterals, the coordinates of whose vertices are (–3, 2), (5, 4), (7, –6) and (–5, –4).


If a ≠ b ≠ c, prove that the points (a, a2), (b, b2), (c, c2) can never be collinear.


If G be the centroid of a triangle ABC and P be any other point in the plane, prove that PA2+ PB2 + PC2 = GA2 + GB2 + GC2 + 3GP2.


Find the area of ΔABC whose vertices is A(–5, 7), B(–4, –5) and C(4, 5).


The table given below contains some measures of the right angled triangle. Find the unknown values.

Base Height Area
20 cm 40 cm ?

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×