Heron’s Formula (Class-9,Math) Leave a Comment / General / By gyanpur Please enter your email: 1. An isosceles right triangle has area 8 cm². The length of its hypotenuse is (a) 32−−√ cm (b) 16−−√ cm (c)48−−√ cm (d) 24−−√ cm 2. The perimeter of an equilateral triangle is 60 m. The area is (a) 10√3 m² (b) 15√3 m² (c) 20√3 m² (d) 100√3 m² 3. The sides of a triangle are 56 cm, 60 cm and 52 cm long. Then the area of the triangle is (a) 1322 cm² (b) 1311 cm² (c) 1344 cm² (d) 1392 cm² 4. The area of an equilateral triangle with side 2√3 cm is (a) 5.196 cm² (b) 0.866 cm² (c) 3.496 cm² (d) 1.732 cm² 5. The area of an equilateral triangle with side 2√3 cm is (a) 5.196 cm² (b) 0.866 cm² (c) 3.496 cm² (d) 1.732 cm² 6. The length of each side of an equilateral triangle having an area of 9√3 cm² is (a) 8 cm (b) 36 cm (c) 4 cm (d) 6 cm 7. If the area of an equilateral triangle is 16√3 cm², then the perimeter of the triangle is (a) 48 cm (b) 24 cm (c) 12 cm (d) 36 cm 8. The sides of a triangle are 35 cm, 54 cm and 61 cm. The length of its longest altitude is (a) 16√5 cm (b) 10√5 cm (c) 24√5 cm (d) 28 cm 9. The area of an isosceles triangle having base 2 cm and the length of one of the equal sides 4 cm is (a) 15−−√ cm² (b) 152−−√ cm² (c) 215−−√5 cm² (d) 415−−√ cm² 10. The edges of a triangular board are 6 cm, 8 cm and 10 cm. The cost of painting it at the rate of 9 paise per cm² is (a) 168 cm² (b) 252 cm² (c) 336 cm² (d) 504 cm² Loading …
