Question

1
20. Base of a triangle is 9 and
height is 5. Base of another triangle
is 10 and height is 6. Find the ratio
of areas of these triangles. *
O 45: 60
60:45
O 9:10
O 5:6​

Answer 1

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• Base of 1st triangle is 9 units and height is 5 units.

• Base of 2nd triangle is 10 units and height is 6 units.

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• What's the r atio of areas of these triangles?

Formula to be used :-

• Area of a triangle = ½ × Base × Height

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1st triangle :-

Base = 9 units

Height = 5 units

Hence, Area of 1st triangle

= ½ × 9 × 5 units²

= 22.5 units²

_____________________________________________________

2nd triangle :-

Base = 10 units

Height = 6 units

Area of 2nd triangle

= ½ × 10 × 6 units²

= 30 units²

Here, we get

Area of 1st triangle is = 22.5 units²

Area of 2nd triangle is = 30 units²

__________________________________________________

Now, find their ratio.

Ratio :-

Area of 1st triangle : Area of 2nd triangle

= 22.5 : 30

= 45 : 60

Hence, ratio of areas of these 2 triangles is = 45:60