HARD

7th CBSE

IMPORTANT

Earn 100

A poster of size $10 cm$ by $8 cm$ is pasted on a sheet of cardboard such that there is a margin of width $1.75 cm$ along each side of the poster. Find the total area of the margin and the cost of the cardboard used at the rate of $₹ 0.60 p e r {cm}^{2}$ .

Important Questions on Mensuration – I (Perimeter and Area of Rectilinear Figures)

HARD

7th CBSE

IMPORTANT

Mathematics for Class 7>Chapter 20 - Mensuration – I (Perimeter and Area of Rectilinear Figures)>EXERCISE>Q 11

A rectangular field is

50 m

40 m

. It has two roads through its centre, running parallel to its sides. The widths of the longer and shorter roads are

1.8 m

and

2.5 m

respectively. Find the area of the roads and the area of the remaining portion of the field.

HARD

7th CBSE

IMPORTANT

Mathematics for Class 7>Chapter 20 - Mensuration – I (Perimeter and Area of Rectilinear Figures)>EXERCISE>Q 12

There is a rectangular field of size

94 m \times 32 m

. Three roads each of

2 m

width pass through the field such that two roads are parallel to the breadth of the field and the third is parallel to the length. Calculate the area of the field covered by the three roads and area of the field not covered by the roads.

HARD

7th CBSE

IMPORTANT

Mathematics for Class 7>Chapter 20 - Mensuration – I (Perimeter and Area of Rectilinear Figures)>EXERCISE>Q 13

A school has a hall which is

22 m

long and

15.5 m

broad. A carpet is laid inside the hall leaving all around a margin of

75 cm

from the walls. Find the area of the carpet and the area of the strip left uncovered. If the width of the carpet is

82 cm

, find the cost at the rate of

₹ 18

per metre.

HARD

7th CBSE

IMPORTANT

Mathematics for Class 7>Chapter 20 - Mensuration – I (Perimeter and Area of Rectilinear Figures)>EXERCISE>Q 14

Two cross roads, each of width

5 m

, run at right angles through the centre of a rectangular park of length

70 m

and breadth

45 m

parallel to its sides. Find the area of the roads. Also, find the cost of constructing the roads at the rate of

₹ 105 p e r m^{2}

HARD

7th CBSE

IMPORTANT

Mathematics for Class 7>Chapter 20 - Mensuration – I (Perimeter and Area of Rectilinear Figures)>EXERCISE>Q 15

The length and breadth of a rectangular park are in the ratio

5 : 2

. A

2.5 m

wide path running all around the outside the park has an area

305 m^{2}

. Find the dimensions of the park.

HARD

7th CBSE

IMPORTANT

Mathematics for Class 7>Chapter 20 - Mensuration – I (Perimeter and Area of Rectilinear Figures)>EXERCISE>Q 16

A square lawn is surrounded by a path

2.5 m

wide. If the area of the path is

165 m^{2}

, find the area of the lawn.

EASY

7th CBSE

IMPORTANT

Mathematics for Class 7>Chapter 20 - Mensuration – I (Perimeter and Area of Rectilinear Figures)>EXERCISE>Q 1

Find the area of a parallelogram with base

8 cm

and altitude

4.5 cm

EASY

7th CBSE

IMPORTANT

Mathematics for Class 7>Chapter 20 - Mensuration – I (Perimeter and Area of Rectilinear Figures)>EXERCISE>Q 2

Find the area in square metres of the parallelogram whose base and altitudes are as under

Base = 15 dm

Altitude = 6.4 dm

A poster of size 10 cm by 8 cm is pasted on a sheet of cardboard such that there is a margin of width 1.75 cm along each side of the poster. Find the total area of the margin and the cost of the cardboard used at the rate of ₹0.60 per cm2.

Important Questions on Mensuration – I (Perimeter and Area of Rectilinear Figures)

Learn and Prepare for any exam you want !

A poster of size $10 cm$ by $8 cm$ is pasted on a sheet of cardboard such that there is a margin of width $1.75 cm$ along each side of the poster. Find the total area of the margin and the cost of the cardboard used at the rate of $₹ 0.60 p e r {cm}^{2}$ .