CBSE Class 9: Area of Triangles Videos | Problem solving on areas related to parallelograms and triangles
Problem solving on areas related to parallelograms and triangles
Areas of the triangles drawn on the same base and between the same parallel lines are equal. Apply this theorem to prove some results on triangles.
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Concept of Area of Region
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Area related to Parallelograms
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Area of Triangles
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Concept of area of Geometrical figures
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Relation between area of two parallelogram
- The sides of a rectangular park are 80 m and 90 m respectively. a small triangular area of side 8m, 10m and 6m respectively is to be left out at the four corners of the park for growing flowering plants. the remaining area is be planted with natural grass. (i)what is the area of the rectangular garden? ( ii) what is the semi-perimeter of the triangle for the above measurements? (iii) find the area used for growing flowering plants. (iv) find the area of the grass to be planted.
- area of right triangle is 240cm and side other than hypotenuse is 30cm.find the perimeter
- find the percentage increase in the area of the triangle if it side is doubled
- an isosceles right angled triangle has an area of 8cm square.find the lenght of its hypotenuse.
- The sides of a triangular plot are in the ratio of 3:5:7 and it's perimeter is300 meter .find its area
- The sides of triangular park in ratio of 2:6:7 and it perimeter is 300m. Then its area is
- Find the area of an isosceles triangle whose perimeter is 60cm and each of equal sides is 24cm
- If the area of an equilateral triangle is 16√3cmsq then find the perimeter of the triangle
- the base of a triangular field is three times its altitude is the cost of sowing the field at rupees 58 per hectare is rupees 783 find its base and height
- A piece of paper is in the shape of a right-angled triangle and is cut along a line that is parallel to the hypotenuse, leaving a smaller triangle. There was 35% reduction in the length of the hypotenuse of the triangle. If the area of the original triangle was 34 square inches before the cut, what is the area (in square inches) of the smaller triangle?
