3. prendre la valcur de \( \pi=3,14 \). a) Calculer l'aire et le périmètre d'un disque de 76 cm de diamétre. b) L'aire d'un disque mesure \( 3846,5 \mathrm{~cm}^{2} \). Combien mesure son rayon? \( \frac{2}{3.14 .76}=238 \cdot 64 \mathrm{~cm} \)

the adjacent side of a right angle riangle is 8 cm , and the ypotenuse is 10 cm , what is the ength of the opposite side? 10 cm 6 cm 9 cm 8 cm

Ein gleichschenkliges Dreieck hat eine 12 cm lange Basisseite und ein Schenkel misst 10 cm . a) Fertige eine Skizze an! b) Berechne die Höhe auf c und den Flächeninhalt des Dreiecks!

Een afstand van 63 km wordt op een kaart voorgesteld door \( 2,1 \mathrm{~cm} \). Op welke schaal is deze kaart getekend?

Antara situasi berikut yang manakah lokus dalam dua dimensi? Which of the following situations are nvo-dimensional loci? I Pergerakan jarum jam. Movement of the clock hands. II Bola ping pong yang digoncang di dalam bekas silinder. Ping pong balls are shaken in a cylindrical container. Pergerakan hujung pengelap cermin kereta yang sedang bergerak. The movement of the tip of windshield wiper of a moving car. IV Menyusun perabot di dalam bilik berdasarkan saiz perabot dan ruang yang tersedia. Arranging furniture in a room based on the size of the furniture and available space. A I dan II I and II B I dan III I and III C II dan IV II and IV D III dan IV III and IV

The volume of a cone varies jointly as the height and the square of the radius. Suppose a cone has the measurements \( V=5425.92 \) cubic meters, \( r=12 \) meters and \( h=36 \) meters. Step 1 of 2 : Find the constant of proportionality \( k \), rounded to two decimal places if necessary, and use it to write an equation that models the relationship.