Question

3. The areas of two similar triangles are 12 cm² and
48 cm2. If the height of the smaller one is 2.1 cm,
then the corresponding height of the bigger one is
(M.B.A., 2006)
(a) 0.525 cm
(b) 4.2 cm
(c) 4.41 cm
(d) 8.4 cm
21.1
​

Answer 1

Areas of the triangles are in ratio 1:4

since area is 4 times the smaller one and the triangles have to be similar, then

1/2×b×2.1= 4×(1/2 ×b×2.1)

1/2× b× 2.1= 1/2 ×2b ×4.2

therefore height should be 4.2cm

hope it helps

please mark it as brainliest answer