Advertisements
Advertisements
Question
Find the area of triangle FED
Advertisements
Solution
Area of a triangle = `1/2` [(x1y2 + x2y3 + x3y1) – (x2y1 + x3y2 + x1y3)]
Area of ∆FED = `1/2[(-2 + 4.5 + 3) - (4.5 + 1 - 6)]`
= `1/2[5.5 - (- 0.5)]`
= `1/2[5.5 + 0.5]`
= `1/2 xx 6`
= 3 sq.units
APPEARS IN
RELATED QUESTIONS
Find the area of a triangle two sides of which are 18 cm and 10 cm and the perimeter is 42 cm.
Find the area of the shaded region in the given figure.
A rhombus sheet, whose perimeter is 32 m and whose one diagonal is 10 m long, is painted on both sides at the rate of Rs 5 per m2. Find the cost of painting.
Find the areas of the given plot. (All measures are in metres.)
Find the areas of the given plot. (All measures are in metres.)
A man walks near a wall, such that the distance between him and the wall is 10 units. Consider the wall to be the Y-axis. The path travelled by the man is
An advertisement board is in the form of an isosceles triangle with perimeter 36 m and each of the equal sides are 13 m. Find the cost of painting it at ₹ 17.50 per square metre.
An isosceles right triangle has area 8 cm2. The length of its hypotenuse is ______.
If the side of a rhombus is 10 cm and one diagonal is 16 cm, the area of the rhombus is 96 cm2.
From a point in the interior of an equilateral triangle, perpendiculars are drawn on the three sides. The lengths of the perpendiculars are 14 cm, 10 cm and 6 cm. Find the area of the triangle.
