4. L'area del triangolo ABC e \( 180 \mathrm{~cm}^{2} \), l'area de triangolo CDE e \( 2,25 \mathrm{dm}^{2} \), Qual e il rapporto le aree?

Geometric Mean of 4,2 and 8 is? Select one: a. -2 b. 0 c. 4 d. 9

(c) The planes \( \Pi_{2} \) and \( \Pi_{3} \) are with equations \( \left.2 x+2 y+1\right) \) respectively, where \( p \) is a constant. (i) Find the vector equation of the line of intersection between planes \( \Pi_{1} \) and \( \Pi_{2} \). (ii) Determine the value of \( p \) such that the planes \( \Pi_{1}, \Pi_{2} \) and \( \Pi_{3} \) do not have any common point.

Define congruent triangles(SSS criterion) baserve the table given below. Find the re

إذا كانت لديك كرة نصف قطرها 4 سم وداخلها أسطوانة بارتفاع 6 سم ونصف قطر 2 سم، احسب المساحة السطحية للجسم المركب الناتج.

Vhat is the area of the circular ring included between two concentri irclec of radius 14 cm and 10.5 cm ?