MATHEMATICS · Multi-part · CBSE · Mathematics · A Square and A Cube · A Square and A Cube
Problem
A painter has two rectangular canvases, one measuring 150 cm × 180 cm and the other 120 cm × 168 cm.
(a) He wishes to cover each canvas completely with identical square stickers of the largest possible size without overlap or waste. Find the side length of one sticker.
(b) Two electronic flash units are set to illuminate the stickers; one flashes every 15 seconds and the other every 20 seconds. If both flash together at 10:00 a.m., after how many seconds will they flash together again?