Introduction to Area

Q.

The perimeter of an equilateral triangle with side 5 cm is:

1. 10 cm

2. 12 cm

3. 20 cm

4. 15 cm

Q.

Perimeter of a rectangle with length 4 cm and breadth 3 cm is:

1. 7 cm

2. 21 cm

3. 15 cm

4. 14 cm

Q. The area of an equilateral triangle is numerically equal to its perimeter. Find its perimeter correct to 2 decimal places.

Q.

Area of a rectangle is 40 cm². If its breadth is 10 cm then its length will be:

1. 4 cm

2. 2 cm

3. 8 cm

4. 3 cm

Q. If the perimeter of a rectangle is 50 cm and its width is 11 cm, then what will be the length?

1. 11 cm
2. 12 cm
3. 14 cm
4. 13 cm

Q.

The area of a rectangle is 24cm² . If its width is 6 cm, then length is

1. 1 cm

2. 12 cm

3. 8 cm

4. 4 cm

Q.

Base of an isoscles triangle is 5/8 cm .Perimeter of the triangle is 3 5/12 cm. Find the Length of equal sides

Q.

Perimeter of an equilateral triangle whose side is 7.5 cm.

1. 22 cm

2. 22.5 cm

3. 23 cm

4. 15 cm

Q.

The area of a scalene triangle with sides 32 cm, 34 cm and 34 cm is

1. 316 cm²

2. 382 cm²

3. 480 cm²

4. 548 cm²

Q.

$\begin{array}{cc}ColumnA& ColumnB\\ 1.\text{Area}& \text{a. 67 m}\\ 2.\text{Perimeter}& {\text{b. Rs.6/m}}^2\\ 3.\text{Cost per}{m}^2& {\text{c. 100 m}}^2\\ & d.Rs.{\text{6 m}}^2\\ & {\text{e. 100/m}}^2\end{array}$

Which of the following options show the correct match of parameters in column A with possible values in column B?

1. 1-c ; 2-e ; 3- d

2. 1-d ; 2-a ; 3-b

3. 1-c ; 2-a ; 3-d

4. 1-c ; 2-a ; 3- b

Q. The base of isoseloes triangle at 4/3 the perimeter of the triangle is 4*2/15cm what is the leangth of either of the remaining equal side

Q. The diagonals of a rhombus are in the ratio 2:3. Find the length of smaller diagonal, if the area of the rhombus is 27 $c{m}^2.$
(4 marks)

Q.

The area of following triangle is 30 cm². If BC = 5 cm then AP = ?

1. 14 cm

2. 15 cm

3. 12 cm

4. 10 cm

Q.

Perimeter of the following triangle is:

1. 15 cm

2. 9 cm

3. 17 cm

4. 13 cm

Q.

The base of an isosceles triangle is 4/3 cm. The perimeter of the triangle is 4 ²⁄₁₅cm . What is the length of either of the remaining equal sides?

Q. All figures having the same area are also congruent to each other.

1. False
2. True

Q. The quantity of cloth required to completely cover a surface is the measure of its area.

1. False
2. True

Q.

Approximate value of pi is:

1. 3.55

2. 3.14

3. 3.45

4. 3.22

Q. Two congruent figures may or may not have same area.

1. False
2. True

Q. If the length of each side of a square is $a$ units, then its area is given by $\frac{a^2}{2}$ square units.

1. False
2. True

Q. Find the perimeter of a rectangular frame if its length is 6 cm and breadth is 4 cm.

1. 20 cm
2. 24 cm
3. 40 cm
4. 10 cm

Q.

Find the perimeter of each of the following shapes:

(a) A triangle of sides 3 cm, 4 cm and 5 cm.

(b) An equilateral triangle of side 9 cm.

(c) An isosceles triangle with equal sides 8 cm each and third side 6cm.

Q. Calculate the circumference of a circle having its diameter as 28 cm.

1. 66 cm
2. 77 cm
3. 44 cm
4. 88 cm

Q.

What is the perimeter of the given polygon (in centimeters) is ___ cm.