Advertisements
Advertisements
प्रश्न
Find the area of the following triangle:

Advertisements
उत्तर
Area of triangle = `1/2 xx "Base" xx "Height"`
Base = 5 cm,
Height = 3.2 cm
Area = `1/2 xx 5 xx 3.2`
= 8 cm2
APPEARS IN
संबंधित प्रश्न
Find the area of a triangle whose vertices are A(3, 2), B (11, 8) and C(8, 12).
Let A (4, 2), B (6, 5) and C (1, 4) be the vertices of ΔABC.
(i) The median from A meets BC at D. Find the coordinates of point D.
(ii) Find the coordinates of the point P on AD such that AP: PD = 2:1
(iii) Find the coordinates of point Q and R on medians BE and CF respectively such that BQ: QE = 2:1 and CR: RF = 2:1.
(iv) What do you observe?
(v) If A(x1, y1), B(x2, y2), and C(x3, y3) are the vertices of ΔABC, find the coordinates of the centroid of the triangle.
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 the blades of thc magnetic compass shown in Fig.. 12.27. (Take √11 = 3.32).

Find the value of p for which the points (−5, 1), (1, p) and (4, −2) are collinear.
Find the area of the following triangle:

Find BC, if the area of the triangle ABC is 36 cm2 and the height AD is 3 cm.

Find the coordinates of the point Q on the x-axis which lies on the perpendicular bisector of the line segment joining the points A(–5, –2) and B(4, –2). Name the type of triangle formed by the points Q, A and B.
The area of ∆ABC is 8 cm2 in which AB = AC = 4 cm and ∠A = 90º.
The area of a trapezium is 475 cm2 and the height is 19 cm. Find the lengths of its two parallel sides if one side is 4 cm greater than the other.
