Advertisements
Advertisements
प्रश्न
Medians of ΔABC intersect at G. If ar (ΔABC) = 27 cm2, then ar (ΔBGC) =
पर्याय
6 cm2
9 cm2
12 cm2
18 cm2
Advertisements
उत्तर
Given: (1) Median of ΔABC meet at G.
(2) Area of ΔABC = 27 cm2
To find: Area of ΔBCG.
We know that the medians of the triangle divides each other in the ratio of 2:1
Hence,
ar (ΔBED) = `1/2 xx BC xx GD`
ar (ΔBED) =`1/2 xx BC xx 1/3 (AD)`
ar (ΔBED) =`1/3(1/2xx AD xx BC)`
ar (ΔBED) =`1/3 (Δ ABC)`
ar (ΔBED) = = `1/3(27)`
ar (ΔBED) == 9 cm2
APPEARS IN
संबंधित प्रश्न
ABCD is a parallelogram. P is the mid-point of AB. BD and CP intersect at Q such that CQ: QP = 3.1. If ar (ΔPBQ) = 10cm2, find the area of parallelogram ABCD.
ABCD is a trapezium in which AB || DC. If ar (ΔABD) = 24 cm2 and AB = 8 cm, then height of ΔABC is
The mid-points of the sides of a triangle ABC along with any of the vertices as the fourth point make a parallelogram of area equal to ______.
Find the area of a rectangle whose length = 24 cm breadth =180 mm
By counting squares, estimate the area of the figure.
Which has the smaller area - two five-rupee notes together or a hundred rupee notes?
How many tiles like the triangle given here will fit in the white design?
Area of design = ________ square cm
Each line gives a story. You have to choose the question which makes the best story problem. The first one is already marked.
- The cost of one book is Rs 47. Sonu buys 23 books.
a) How much money does she have? b) How much money does she pay for the books? c) What is the cost of 47 books?
Whose footprint is larger - yours or your friend’s?
Find the area of the following figure by counting squares:
