Question

F 붉
1. 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.​

Answer 1

Answer:

9:12

Step-by-step explanation :

Area of 1st triangle = 1/2 * base * height

                                = 1/2 * 9 * 5

Area of 2nd triangle = 1/2 * base * height

                                   = 1/2 * 10 * 6

Ratio = Area of 1st triangle / Area of 2nd triangle

        = 1/2 * 9 * 5 / 1/2 * 10 * 6

        = 9 * 5 / 10 * 6

        = 9 / 2 * 6

        = 9 / 12

        = 3 / 4

        = 3:4

Answer 2

Step-by-step explanation:

area of first triangle, a = 1/2xbxh

= 1/2x9x5

= 45/2

= 22.5

area of second triangle, a' = 1/2xbxh

= 1/2x10x6

= 30

ratio of two triangles = a/a'

= 22.5/30

= 1.5/2

= 15/20

= 3/4

= 3:4