3) Flool of an ICT room of school is to be fitted with a square marble of the largest possible size. The size of the room is lam by 7 cm . What sho- wld be the size of the tiles required that has to be cut \& how many such tiles are required?

Calcular el volumen de un cilindro dado si se corta a través de su dirección vertical, formando cross sections semicirculares con un diámetro de 6 unidades.

What is a circle?

\( \begin{aligned} \text { B.ea } & =l \times b \\ & =8 \times 3 \\ & =24 \mathrm{~cm}\end{aligned} \)

A right triangle has one angle measuring 45 degrees. If the length of one leg is 7 units, calculate the length of the other leg.

0) A circle with diameter of length 20 cm ., passes through the vertices of \( \triangle A B C \) which is an acute-angled triangle in which \( B C=10 \mathrm{~cm} \)., then \( \mathrm{m}(\angle A)=\ldots \ldots \ldots \ldots \) \( \begin{array}{llll}\text { (a) } 30 & \text { (b) } 60 & \text { (c) } 45 & \text { (d) } 150\end{array} \)