Question

Help me please Will give brainlist

Answer 1

Answer:

Step-by-step explanation:

These are geometric means problems. In the top one, a is the geometric mean as the height for both the smaller triangles inside the big one. Therefore,

$\frac{4}{a} =\frac{a}{25\\}\\a^2=100\\a=10$

The next one has the geometric mean of b, being a part of the smaller triangle on the left and the big triangle as a whole:

$\frac{4}{b} =\frac{b}{29}\\b^2=116\\b=10.77$