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Activity Discussion Math Quadrilateral Math CLASS-8

Posted by on June 23, 2023 at 3:51 pm
1. In a rectangle, if the length is 12 cm and the breadth is 8 cm, find the perimeter and area of the rectangle.

2. In a quadrilateral, if one pair of opposite sides is parallel and equal in length, and all angles are right angles, what type of quadrilateral is it?

replied 3 months, 1 week ago 3 Members · 2 Replies
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• ### Rahul

Member
June 23, 2023 at 4:16 pm
1

To find the perimeter and area of a rectangle with a length of 12 cm and a breadth of 8 cm, we can use the following formulas:

Perimeter of a rectangle: P = 2(length + breadth)

Area of a rectangle: A = length × breadth

Using these formulas, we can calculate the perimeter and area:

Perimeter: P = 2(12 cm + 8 cm) = 2(20 cm) = 40 cm

Area: A = 12 cm × 8 cm = 96 cm²

Therefore, the perimeter of the rectangle is 40 cm, and the area is 96 cm².

2. As for the quadrilateral with one pair of opposite sides parallel and equal in length, and all angles being right angles, this describes a special type of quadrilateral called a rectangle. A rectangle has two pairs of parallel sides and all four angles are right angles.

• ### Anurag

Member
June 23, 2023 at 3:57 pm
0
1. To calculate the perimeter of a rectangle, we add the lengths of all four sides. In this given question, the length is 12 cm and the breadth is 8 cm.

Perimeter of the rectangle = 2 × (Length + Breadth)

Perimeter = 2 × (12 cm + 8 cm)

Perimeter = 2 × 20 cm

Perimeter = 40 cm

So, the perimeter of the rectangle is 40 cm.

To find the area of a rectangle, we multiply the length by the breadth.

Area of the rectangle = Length × Breadth

Area = 12 cm × 8 cm

Area = 96 cm²

So, the area of the rectangle is 96 square cm.

1. A quadrilateral with one pair of opposite sides parallel and equal in length, and all angles being right angles, is called a rectangle. In other words, if a quadrilateral has two pairs of opposite sides that are parallel and equal in length, it is a rectangle.
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