the length of the tangent from a point A at a distance 70 cm from the centre of a - Maths - Circles

Question

the length of the tangent from a point A at a distance 70 cm from
the centre of a circle is 56 cm Find the circumference of the
circle

Brijendra Pal · Accepted Answer

Hi,
<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/ck-files/ck_58731c6820376%20png"
style="width: 402px; height: 179px;">
r = 702-562=70+5670-56=126×14=42so circumference = 2πr= 2×227×42=264 cm2Regards

the length of the tangent from a point A at a distance 70 cm. from the centre of a circle is 56 cm. Find the circumference of the circle.