Question

in a triangle the height is double the base and the area is 400 cm square .Find the length of the base and height ​

Answer 1

Answer:

let height be x

base be 2x

area=1÷2×base×height

=1÷2×2x×x=400

x²=400

x=20

height 20

base 40

Answer 2

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ANSWER :

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The Base of the Triangle = b

The Height of the triangle, h = 2b

The Area of the triangle, A = 400 cm^2

We know that ,

$area \: of \: triangle \: = \frac{1}{2} \times b \times h$

From this ,,,

Area , A = 1/2 × b × 2b

400 = b^2

b = ( 400)^1/2

b = 20cm

The height of the triangle, h = 2b

h = 2 × 20

h = 40 cm

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