Hellow guys, Welcome to my website, and you are watching A vertical stick 20m long cast shadow 10m on the ground. At the same time a tower.. CLASS 10 MATHS. and this vIdeo is uploaded by The learning Companion at 2021-12-02T22:18:09-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.