Starting from the origin O

MATHEMATICS · Single correct · GCSE · Mathematics · Geometry and Measures · Geometry and Measures

Problem

Starting from the origin O, a student moves 4 units along the positive

x

-axis to point A and then draws a perpendicular of 1 unit to point B. The length

OB

represents which of the following numbers? (a)

\sqrt{16}

(b)

\sqrt{17}

(c)

\sqrt{5}

(d)

\sqrt{18}