Question

The base of a triangle is 15cm and its height is 12 cm. Find the height of another triangle if its area is double the area of the first triangle and base 20cm

Answer 1

Answer:

Area = 1/2. bh=1/2 x 15x12=90cm2

Area of the 2nd triangle =

2x90=180cm2

180=1/2x20xh

h=360/20=18cm

Answer 2

Answer:

18 cm.

Step-by-step explanation:

area of new tiangle is 15*12 cm² = 180 cm²

20h/2 = 10h = 180

h = 18 cm.