Advertisements
Advertisements
प्रश्न
Find the area of a triangle, whose sides are :
10 cm, 24 cm, and 26 cm
उत्तर
Sides of ∆ are
a = 10 cm
b = 24 cm
c = 26 cm
S = `(a + b + c)/2 = (10 + 24 + 26)/2`
= `60/2 = 30`
area of Δ = `sqrt(S(S - a)(S - b)(S - c))`
= `sqrt(30(30 - 10)(30 - 24)(30 - 26))`
= `sqrt(30 xx 20 xx 6 xx 4)`
= `sqrt(10 xx 3 xx 10 xx 2 xx 2 xx 3 xx 2 xx 2)`
= `sqrt(10 xx 10 xx 3 xx 3 xx 2 xx 2 xx 2 xx 2)`
= `10 xx 3 xx 2 xx 2 = 120 "cm"^2`
APPEARS IN
संबंधित प्रश्न
Find the area of an isosceles triangle with perimeter is 36 cm and the base is 16 cm.
The area of an equilateral triangle is numerically equal to its perimeter. Find its perimeter correct to 2 decimal places.
Find the area of a triangle whose sides are in the ratio 5:12:13 and whose perimeter is 36cm.
Find the area of a triangle with a base 12cm and a height equal to the width of a rectangle having area of 96cm2 and a length of 12cm.
The table given below contains some measures of the triangle. Find the unknown values.
| Side 1 | Side 2 | Side 3 | Perimeter |
| ? | 8 m | 3 m | 17 m |
From one vertex of an equilateral triangle with side 40 cm, an equilateral triangle with 6 cm side is removed. What is the perimeter of the remaining portion?
In the given figure, all triangles are equilateral and AB = 8 units. Other triangles have been formed by taking the mid points of the sides. What is the perimeter of the figure?
The perimeter of a triangle is 28 cm. One of it’s sides is 8cm. Write all the sides of the possible isosceles triangles with these measurements.
Find the perimeter of a triangle with sides measuring 10 cm, 14 cm and 15 cm.
In the given figures, perimeter of ΔABC = perimeter of ΔPQR. Find the area of ΔABC.
