Find the altitude of a triangle whose area is 100 cm² and whose base is 20 cm.
altitude = cm.

Step-by-step explanation:

Area of a triangle = 100 sq.cm

(1/2) * base * altitude = 100

(1/2) * 20 * altitude  = 100

                   altitude  = 100 *2 / 20 = 5 * 2 = 10 cm

1/3

step-by-step explanation:

to find this, you can divide 12 by 4 which is 3 or you can multiply 4 until you reach 12 (4x3=12). both should give you 3, meaning theres three times less bananas than there are oranges.