22. A rectangular foor of a room measures 5.4 m long and 4.2 m wide. The room is to be covere with square tiles. Calculate the minimum number of square tiles that can be used to cover the floor.

QUESTÃO 17- Uma pirâmide tem base quadrada de lado 6 cm e altura 8 cm . Qual é o seu volume?

\begin{tabular}{l|l} In un parco ci sono tre fontane poste a 20 m \\ una dall'altra. Una panchina e situata nel \\ punto \( P \) a uguale distanza da ciascuna di \\ esse. Calcola: \\ a. la distanza della panchina da ciascuna \\ fontana; \\ b. la misura del raggio della circonferenza \\ inscritta nel triangolo che si ottiene con- & \\ giungendo i punti \( A, B, C \). \end{tabular}

Известно, что \( \angle 1+\angle 2=118^{\circ}, \quad C D \) биссектриса \( \angle E C B \). Найдите \( \angle 1 \).

Известно, что \( \angle 1: \angle 2: \angle 3=7: 8: 3 \). Найдите \( \angle 1+\angle 3 \). Ответ дайте в

Mathematics MOCK Grade 8 P2 QUESTION 5 You have a 100 m length of fencing to make an enclosed pen for your dog in the backyard. You can make a circle with circumference 100 m , a square with a perimeter of 100 m , or a rectangle with width 6 m to make a long pen so the dog can run up and down. Which pen gives the dog the most area? \( \quad \pi \approx 3.14 \)