4 La base di un parallelogramma misura 35 cm e l'altezza ad essa relativa misura 20 cm . L'altezza relativa al lato obliquo misura 28 cm ; calcola: (a) l'area del parallelogramma; (b) la lunghezza del lato obliquo; (c) il perimetro del parallelogramma.

\( Q(7,10) \). Cari kecerunan bagi persamaan pembahagi dua sama serenjang untuk garis lurus \( P Q \). (TP4) A straight line passes through point \( (P(2,5) \) and point \( Q(7,10) \). Find the gradient of the equation of the perpendicular bisector for the straight line \( \overline{P Q} \) [3 markah / marks \( ] \)

Find the condition at which the line \( l x+m y+n=0 \) touches the circle \( x^{2}+y^{2}+28 x+2 f y+c=0 \) For what value of \( n \), a. the line \( 3 x+4 y+n=0 \) touches the circle \( x^{2}+y^{2}-4 x-6 y-12-02 \)

Denise is constructing a square in which two of its vertices are points \( M \) and \( N \). She has already used her straightedge and compass to construct the lines and arcs shown. What should Denise do for her next step? Place the point of the compass on point \( M \) and draw any arc above it. Use a straightedge to draw Place the point of the compass on point \( N \) and draw an arc that intersects width for the opening of the compass. Use a straightedge to draw a horizontal line that contains point \( O \).

b) Prove the following by vector method. Measure of the angle between two diagonals of a cube is \( \cos ^{-1} \frac{1}{3} \)

Un cilindro y un cono tienen la misma base y altura. Si el radio de la base es de 4 cm y la altura es de 9 cm, calcula el volumen del cilindro y el volumen del cono.