# CBSE Class 9th Math 9 – Areas of Parallelograms and Triangles MCQs

#### The region occupied by a simple closed figure in a plane is called its ____.

Correct! Wrong!

The region occupied by a simple closed figure in a plane is called its area.

#### If a parallelogram and a triangle are on the same base and between the same parallels, then area of the triangle is half the area of the parallelogram.

Correct! Wrong!

If a parallelogram and a triangle are on the same base and between the same parallels, then area of the triangle is half the area of the parallelogram.

#### The area of a right-angled triangle with a base of 10 cm and height of 5cm is

Correct! Wrong!

Area = 1 /2 × b × h = 1 /2 × 10 × 5 = 25 cm2 Hence, the required area is 25 cm2

#### The base of a parallelogram is 18 cm and its distance from the opposite side is 8 cm, then its area is ____.

Correct! Wrong!

Let b = 18 cm and h = 8 cm We know that, Area of the parallelogram = b × h = 18 × 8 = 144 cm2 Hence, the required area is 144 cm2.

#### A one rupee coin and 50 paise coin placed one on top of the other are congruent.

Correct! Wrong!

A one rupee coin and 50 paise coin placed one on top of the other are not congruent because they have the same shape but not the same size.

#### If the two perpendicular sides of a right angled triangle are in the ratio 3:4 and its area is 96 cm2, then its sides are ____.

Correct! Wrong!

Let the sides be 3x cm and 4x cm. Given A=96 cm2 We know that, A=1 /2 × b × h ⇒96=12×3x×4x ⇒192=12 x2 ⇒ x2=16 ⇒x=4 (∵ x cannot be negative) 3x = 3 × 4 = 12 cm 4x = 4 × 4 = 16 cm Hence, the required sides are 12 cm and 16 cm.

#### Parallelograms on the same base and between the same parallel lines are equal in area.

Correct! Wrong!

Parallelograms on the same base and between the same parallel lines are equal in area.

#### The area of a parallelogram with base of 12 cm and height of 5 cm is ____ cm2.

Correct! Wrong!

Given, base of the parallelogram = b = 12 cm and height = h = 5 cm Area of the parallelogram = b × h = 12 × 5 = 60 cm2 Hence, the required area is 60 cm2.

#### The area of a parallelogram is 300 sq. cm and the height is 20 cm. Then its breadth is ____.

Correct! Wrong!

Let the breadth of the parallelogram be 'b' cm. Given, area of the parallelogram = A = 300 sq. cm and height = h = 20 cm Area of the parallelogram = b × h ⇒ 300 = 20 × h ⇒ b = 300 /20 ⇒ b = 15 cm Hence, the breadth of the parallelogram is 15 cm.

#### Two figures having same areas are not always congruent.

Correct! Wrong!

Two figures are congruent if they have same shape and size but not same areas.

Date
Reviewed Item
CBSE Class 9th Math 9 - Areas of Parallelograms and Triangles MCQs
Author Rating
5