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CBSE Questions for Class 9 Maths Heron'S Formula Quiz 5 - MCQExams.com

The sides of a triangle measures 13cm,14cm and 15cm. Its area is
  • 84cm2
  • 91cm2
  • 168cm2
  • 182cm2
The area of an equilateral triangle is 43cm2. The length of each of its sides is
  • 3cm
  • 4cm
  • 23cm
  • 123cm
Write true or false and justify your answer. The are of isosceles triangle is 5/411cm2, if the perimeter is 11 cm and the base is 5cm.
  • True
  • False
Each side of an equilateral triangle is 8cm long. Its area is:
  • 32cm2
  • 64cm2
  • 163cm2
  • 162cm2
In an isosceles triangle PQR, the altitude PS=6 cm and PQ=PR=10 cm. Find the area of PSR.
1949398_3c0271b4993544d7b50b8e8dd01139ae.png
  • 20 cm2
  • 22 cm2
  • 24 cm2
  • None of these
Write true or false and justify your answer. The are of the equilateral triangle is 203cm2 whose each side is 8 cm.
  • True
  • False
If AD=4 cm and AB=5 cm in the given figure, then find the area of ADB.
1949397_2758717706fa49d4a1e7c80bdf666869.jpg
  • 4 cm2
  • 6 cm2
  • 8 cm2
  • 10 cm2
In the given figure, if PL=2QL, then what will be the area of PLQ?
1949431_2f7554a7df9f4691a869ee9307fb39aa.jpg
  • 28.8 square units
  • 26.8 square units
  • 28.3 square units
  • 26.3 square units
If ABC is a right isosceles triangle with hypotenuse AC=10 cm and right angle at B, then the twice of its area is ____.
  • 20 cm2
  • 30 cm2
  • 40 cm2
  • 50 cm2
Riya has a piece of cloth in the shape of equilateral triangle whose all altitudes are equal to 6 cm. Find its area. (if each of it's sides are  43 cm)
  • 43 cm2
  • 83 cm2
  • 123 cm2
  • 163 cm2
Find the area of ABD
1949399_bcb9a3a292ad4ecca8fe8ad634397dc5.PNG
  • 12 cm2
  • 24 cm2
  • 28 cm2
  • none of these
In the given figure, it is given that O is a mid point of AB and CD, AB=24 units and CD=26 units. Find the value of ar(OBC)+2ar(OAD).
1949400_208569b5b6814fee8919424fec699f60.png
  • 30 units2
  • 60 units2
  • 90 units2
  • None of these
Diya has a lunch box in the shape of right isosceles triangle of hypotenuse 30 cm, find its area.
  • 150 cm2
  • 160 cm2
  • 170 cm2
  • 225 cm2
Ankita has a piece of cake in the shape of an equilateral triangle whose all altitudes are equal to 8 cm. Then the half of its area is ____. (if each side is equal to 2732)
  • 273 cm2
  • 283 cm2
  • 293 cm2
  • 303 cm2
Find area of triangle ADC.
1949429_9299a24967674636b7fa9467aad5fb4a.PNG
  • 15 cm2
  • 20 cm2
  • 30 cm2
  • 40 cm2
In given figure, AC=5 cm, BD=2 cm and CD=2BD. Find the area of ABC.
1949421_240fba20c6814e2ca8f2e8e11f8c82c6.jpg
  • 9 cm2
  • 18 cm2
  • 27 cm2
  • None of these
Find the area of triangle ABD.
1949424_7654b1c6322343c9a5bb8e711daf8584.PNG
  • 30 cm2
  • 18 cm2
  • 6 cm2
  • 12 cm2
Find ar(ABD).
1949433_08da22259b374aedab77108366b9c072.PNG
  • 6 cm2
  • 70 cm2
  • 80 cm2
  • 90 cm2
How much paper of blue shade is needed to make a kite given in the figure, if AB=BC=10 cm and BO=8 cm?
1949434_48d86fa05d3c457f93c9605672150209.jpg
  • 24 cm2
  • 48 cm2
  • 96 cm2
  • None of these
Two sides of a plot measure 32 m and 24 m and the angle between them is a perfect right angle The other two sides measure 25 m each and the other three angles are not right angles What is the area of the plot?
299303_ef9bd82ae7b24130ab2b45ce009f035c.png
  • 768m2
  • 534m2
  • 696.5m2
  • 684m2
Find the area of a quadrilateral whose sides are 12,5,6 and 15. The angle between the first two sides is 90. (Use Heron's formula)
  • 20+ 22805
  • 30+ 2805
  • 30+ 2374
  • 30+ 21805
The perimeter of a triangle is 540 m and its sides are in the ratio 12:25:17. Find the area of the triangle.

  • 5,000m2
  • 6,000m2
  • 9,000m2
  • 8,000m2
The triangular side - wall of a flyover have been used for advertisements, The sides of the walls are 122 m, 22m and 120 m. The advertisements requires rent of Rs 5000 per m2 per year. A company hired one of its walls for 3 months. How much rent did it pay ?
  • 1750000
  • 1600000
  • 1650000
  • None of these
Using Heron's formula find the area of a quadrilateral whose sides are 3 cm,4 cm,4 cm, and 5 cm. The angle between the first two sides is 900.
  • 14cm2
  • 16cm2
  • 18cm2
  • (6+67)cm2

A traffic signal board, indicating 'SCHOOLAHEAD', is an equilateral triangle with side a. Find the area of the signal board, using Heron's formula. If its perimeter is 180cm, what will be the area of the signal board?

  • 9003cm2
  • 3003cm2
  • 6003cm2
  • 9002cm2
Find the area of a quadrilateral whose sides are 3 cm,4 cm,2 cm, and 5 cm. The angle between the first two sides is 90o. (Use Heron's formula)
  • 14cm2
  • 16cm2
  • (6+24)cm2
  • 20cm2
Find the area of a field which is in shape of a parallelogram with sides 12 cm and 14 cm and one of the diagonal of length 18 cm.   
  • 16110 cm2
  • 1811 cm2
  • 810 cm2
  • 611 cm2
In an equilateral triangle, 3 coins of radii 1 unit each are kept so that they touch each other and also the sides of the triangle. Area of the triangle is?
  • 4+23
  • 6+43
  • 12+734
  • 3+734
Find the area of the triangle whose sides are 84 metres, 80 metres and 52 metres.
  • @056 sq.m
  • 2756 sq.m
  • 2016 sq.m
  • 2716 sq.m
  • NONE OF THESE
The side of an equilateral triangle whose area is \sqrt{3}{cm}^{2} is:
  • 1cm
  • 2cm
  • 3cm
  • 4cm
0:0:3


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