# MCQs for Mathematics Class 9 with Answers Chapter 12 Herons Formula

Students of Class 9 Mathematics should refer to MCQ Questions Class 9 Mathematics Herons Formula with answers provided here which is an important chapter in Class 9 Mathematics NCERT textbook. These MCQ for Class 9 Mathematics with Answers have been prepared based on the latest CBSE and NCERT syllabus and examination guidelines for Class 9 Mathematics. The following MCQs can help you to practice and get better marks in the upcoming Class 9 Mathematics examination

## Chapter 12 Herons Formula MCQ with Answers Class 9 Mathematics

MCQ Questions Class 9 Mathematics Herons Formula provided below have been prepared by expert teachers of grade 9. These objective questions with solutions are expected to come in the upcoming Standard 9 examinations. Learn the below provided MCQ questions to get better marks in examinations.

Question. An isosceles right triangle has area 8 cm2. The length of the hypotenuse is
(a) 6 cm
(b) 32 cm
(c) 8 cm
(d) 4 cm

B

Question. The area of a triangle whose sides are 3 cm, 4 cm and 5 cm is
(a) 42 cm2
(b) 6 cm2
(c) 84 cm2
(d) 100 cm2

B

Question. If the perimeter and base of an isosceles triangle are 11 cm and 5 cm respectively, then its area is
(a) 511 cm2
(b) 5211 cm2
(c) 5811 cm2
(d) 5411 cm2

D

Question. If the perimeter of an equilateral triangle is 24 m, then its area is
(a) 203 m2
(b) 163 m2
(c) 83 m2
(d) 243 m2

B

Question. The edges of a triangular board are 6 cm, 8 cm and 10 cm. The cost of painting it at the rate of 70 paise per c m2 is
(a) Rs 7
(b) Rs 16.80
(c) Rs 17
(d) Rs 16

B

Question. If the difference between the semi-perimeter ‘s’ and the sides ‘a’, ‘b’ and ‘c’ of DABC are 8 cm, 7 cm and 6 cm respectively, then ar(DABC) is
(a) 63 cm2
(b) 42 cm2
(c) 84 cm2
(d) 168 cm2

C

Question. The perimeter of a rhombus is 20 cm. If one of its diagonals is 6 cm, then its area is
(a) 28 cm2
(b) 36 cm2
(c) 24 cm2
(d) 20 cm2

C

Question. If the perimeter of a rhombus whose diagonals measure 12 cm and 16 cm is equal to the perimeter of an isosceles triangle having its equal side and the base in the ratio 3 : 2, then the area of the isosceles triangle is
(a) 502 cm2
(b) 252 cm2
(c) 752 cm2
(d) 1002 cm2

A

Question. The area of an isosceles triangle having base 24 cm and length of one of the equal sides 20 cm is
(a) 480 cm2
(b) 196 cm2
(c) 240 cm2
(d) 192 cm2

D

Question. The perimeter of an isosceles triangle is 32 cm. The ratio of the equal side to its base is 3 : 2. Then area of the triangle is
(a) 322 cm2
(b) 32 cm2
(c) 162 cm2
(d) 16 cm2

A

Question. The area of a triangle with base 8 cm and height 10 cm is
(a) 80 cm2
(b) 40 cm2
(c) 20 cm2
(d) 18 cm2

B

Question. The sides of a triangle are 13 cm, 14 cm and 15 cm. The length of the shortest altitude is
(a) 12 cm
(b) 11.2 cm
(c) 12.9 cm
(d) 11.9 cm

B

Question. The sides of a triangle are 12 cm, 16 cm and 20 cm. Its area is
(a) 48 cm2
(b) 120 cm2
(c) 96 cm2
(d) 160 cm2

C

Question. The sides of a triangle are 17 cm, 25 cm and 26 cm. The length of the altitude to the longest side correct up to two places of decimals is
(a) 16.32 cm
(b) 34.00 cm
(c) 15.69 cm
(d) 24.00 cm

C

Question. If the area of an equilateral triangle is 163 cm2, then the perimeter of the triangle is
(a) 12 cm
(b) 24 cm
(c) 48 cm
(d) 36 cm