Advertisements
Advertisements
Question
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 |
Advertisements
Solution
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
RELATED QUESTIONS
Find the area of a triangle whose sides are 18 cm, 24 cm, and 30 cm. Also, find the length of altitude corresponding to the largest side of the triangle.
The area of an equilateral triangle is 36`sqrt3` sq. cm. Find its perimeter.
The base of a triangular field is three times its height. If the cost of cultivating the field at ₹ 36.72 per 100 m2 is ₹ 49,572; find its base and height.
The perimeter of a triangle is 450 m and its side are in the ratio 12: 5: 13. Find the area of the triangle.
Find the area of a triangle, whose sides are :
18 mm, 24 mm and 30 mm
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 triangle whose base is 3.8 cm and height is 2.8 cm.
The perimeter of a triangle is 72cm and its sides are in the ratio 3:4:5. Find its area and the length of the altitude corresponding to the longest side.
Find the perimeter and the area of a right angled triangle whose sides are 6 feet, 8 feet and 10 feet
Find the perimeter of the triangle, whose sides are 13 cm, 5 cm and 14 cm
