Question

3. What is the length of the altitude of a triangle, whose area is 21cm²
And base is 6cm:
(a) 7cm
(b) 8cm
(c) 9cm
(d) 10cm​

Answer 1

Answer:

7cm

Step-by-step explanation:

Let altitude be y

½*y*6=21cm²

1*y*3=21cm²

y*3=21cm²

y=21/3

y=7cm

So, the answer is 7cm