Q5 of 99 Page 258

The ratio of height of the two triangles which are drawn by Suja and I is 3 : 4 and the ratio of their area is 4 : 3. Let us write by calculating what will be the ratio of two bases.

Area of a triangle


Given there are two triangles


And ratio of their area


Also ratio of their height


Where, b1is the base and h1is the height and A1is the area of suja`s triangle


And b2is the base and h2is the height and A2is the area of my triangle


Ratio of area of triangle


⇒


⇒


⇒


⇒


The ratio of the bases of two triangles is 16:9


More from this chapter

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3

The length of hypotenuse of an isosceles right - angled triangle is 12√2 cm. Let us write by calculating what will be the area of that field.

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The lengths of three sides of our triangular park are 65 m, 70 m and 75 m. Let us write by calculating the length of perpendicular drawn from opposite vertex on the longest side.

 1

See the house of Kamal and let us find the answer.


(i) Let us write by calculating the area of Kamal’s garden.


(ii) Let us write by calculating how much cost is required to repair the floor of Kamal’s verandah, if Rs. 30 is the cost per square meter.


(iii) kamal wants to cover the floors of his reading room with tiles. Let us write by calculating how many tiles will be required to cover his floor of reading room with size of tiles 25 cm × 25 cm.

 2

Let us see the following pictures and calculate the area of its coloured part.