SEE Mathematics
Solution:
Given;
AD//BE//GF and AB//DG//EF
Also areas of parallelograms ABCD and CEFG are equal.
To prove: DE// BG
Construction: BD and EG are joined
Proofs:
Cylinder|| SEE
A cylinder is a three-dimensional solid that holds two parallel bases joined by a curved surface, at a fixed distance. These bases are normally circular in shape and the center of the two bases are joined by a line segment, which is called the axis. The perpendicular distance between the bases is the height, “h” and the distance from the axis to the outer surface is the radius “r” of the cylinder. Formulas The cylinder has three major quantities, based on which we have the formulas. Lateral Surface Area or curved surface area Total Surface Area Volume Let us see, their formulas now. Curved Surface Area of Cylinder The area of the curved surface of the cylinder which is contained between the two parallel circular bases. It is also stated as a lateral surface area. The formula for it is given by: Curved Surface Area = 2πrh square units Total Surface Area of Cylinder The total surface area of a cylinder is the sum of curved surafce area and the area of two circular bases. TSA = Curved su
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