Advertisements
Advertisements
प्रश्न
The table given below contains some measures of the triangle. Find the unknown values.
| Side 1 | Side 2 | Side 3 | Perimeter |
| 11 feet | ? | 9 feet | 28 feet |
उत्तर
Perimeter of a triangle = sum of three sides
Perimeter = side 1 + side 2 + side 3
28 feet = 11 feet + side 2 + 9 feet
28 feet = 20 feet + side 2
28 – 20 = side 2
side = 8 feet
Tabulating the unknowns.
| Side 1 | Side 2 | Side 3 | Perimeter |
| 11 feet | 8 feet | 9 feet | 28 feet |
APPEARS IN
संबंधित प्रश्न
AD is altitude of an isosceles triangle ABC in which AB = AC = 30 cm and BC = 36 cm. A point O is marked on AD in such a way that ∠BOC = 90o. Find the area of quadrilateral ABOC.
The area of an equilateral triangle is 36`sqrt3` sq. cm. Find its perimeter.
The sides of a triangular field are in the ratio 5: 3: 4 and its perimeter is 180 m. Find:
(i) its area.
(ii) the altitude of the triangle corresponding to its largest side.
(iii) the cost of leveling the field at the rate of Rs. 10 per square meter.
Find the area of a triangle, whose sides are :
10 cm, 24 cm, and 26 cm
Two sides of a triangle are 6 cm and 8 cm. If the height of the triangle corresponding to 6 cm side is 4 cm; find :
(i) area of the triangle
(ii) height of the triangle corresponding to 8 cm side.
The altitude and the base of a triangular field are in the ratio 6: 5. If its cost is ₹ 49,57,200 at the rate of ₹ 36,720 per hectare and 1 hectare = 10,000 sq. m, find (in metre) dimensions of the field.
Find the area of a right angled triangle whose hypotenuse is 15cm and the base is 9cm.
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?
A piece of string is 30 cm long. What will be the length of each side if the string is used to form an equilateral triangle?
Area of an isosceles triangle is 48 cm2. If the altitudes corresponding to the base of the triangle is 8 cm, find the perimeter of the triangle.
