24/7 LiveSan FranciscoEast BaySouth BayPeninsulaNorth Bay

pi day

VIDEO: How to measure pi using a real pie

ByJuan Carlos Guerrero KGO logo

Wednesday, March 14, 2018

Exploratorium scientist Julie Yu demonstrates how to measure pi using a string and real fruit pie.

KGO

SAN FRANCISCO (KGO) -- In honor of Pi Day on March 14, Exploratorium scientist Julie Yu demonstrates how to measure pi using a string and real fruit pie.

Watch the video above to see how it's done.

Grand Canyon braces for more storms after deadly flash flood, about 15 people still missing

Bodies of 2 missing canoers found in Tomales Bay after bioluminescent tour: officials

1 hour ago

Bay Area Nepalese community rallies to support flood disaster victims as thousands still missing

Report a correction or typo

Pi Day has San Francisco roots

Pi Day

Here's where you can get Pi Day deals

What is Pi Day and why do we celebrate the holiday?

Pi Day mates math with pizza, dessert

The 3 burning questions about pizza, answered

Live Streams

ON NOW

Grand Canyon braces for more storms; about 15 people still missing

Bodies of 2 missing canoers found in Tomales Bay after night tour

1 hour ago

Bay Area Nepalese community rallies to support flood disaster victims

Jurors in Lindsay Clancy return for third day of deliberations

1 hour ago

Suspect in custody after allegedly threatening woman at Oakland park

Southern California couple welcomes rare naturally conceived triplets

1 hour ago