Question

Help me, this is math and I need to this this extension.

Answer 1

Answer:

• from pythogras theorem:

${ \rm{ {c}^{2} = {a}^{2} + {b}^{2} }}$

a → 5 km

c → 8 km

${ \tt{ {8}^{2} = {5}^{2} + {b}^{2} }} \\ \\ { \tt{ {b}^{2} = {8}^{2} - {5}^{2} }} \\ \\ { \tt{ {b}^{2} = 39}} \\ \\ { \tt{ \: b = \sqrt{39} = 6.2 \: km }}$

Answer 2

Applying pythagorean theorem:-

$\\ \sf\longmapsto 8^2-5^2=b^2$

$\\ \sf\longmapsto 64-25=b^2$

$\\ \sf\longmapsto b^2=39$

$\\ \sf\longmapsto b=\sqrt{39}$

$\\ \sf\longmapsto b=6.24$