Question

.A rectangle is divided into two equal triangles.If the area of the rectangle is 36 cm² then what will be the area of the triangle?
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Answer 1

Answer:

Area of rectangle=36cm²

if it is divided into two equal parts then

half of area=half of rectangle=1 triangle

so area of triangle= 36/2=16cm²

Answer 2

Given :

A rectangle is divided into two equal triangles . And the area of the rectangle is 36 cm²

To Find :

Area of the triangle

Solution :

Area of the rectangle = 36 cm²

⇒ lb = 36 ... (1)

Now , this rectangle is divided into two equal triangles ,

Find attachment .

Area of 1 triangle ,

$\to \sf A=\dfrac{1}{2}\times b\times h$

where ,

• b denotes base = length of rectangle
• h denotes height = breadth of the rectangle

$\to \sf A=\dfrac{1}{2}\times l\times b\\\\\to \sf A=\dfrac{1}{2}\times (lb)$

From (1) ,

$\to \sf A=\dfrac{1}{2}\times (36)\\\\\leadsto \sf \pink{A=18\ cm^2}\ \; \bigstar$

Area of the triangle = 18 cm²