So the area of piece A = ________ square cm

प्रश्न

रिक्त स्थान भरें

उत्तर

So the area of piece A = 30 square cm

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Concept of Area

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Q 1.3 Q 1.2 Q 1.4

अध्याय 11: Area and its Boundary - Area and its Boundary [पृष्ठ १४७]

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एनसीईआरटी Math - Magic [English] Class 5

अध्याय 11 Area and its Boundary
Area and its Boundary | Q 1.3 | पृष्ठ १४७

संबंधित प्रश्न

A point D is taken on the side BC of a ΔABC such that BD = 2DC. Prove that ar(Δ ABD) =
2ar (ΔADC).

ABCD is a parallelogram in which BC is produced to E such that CE = BC. AE intersects
CD at F.
(i) Prove that ar (ΔADF) = ar (ΔECF)
(ii) If the area of ΔDFB = 3 cm2, find the area of ||^gm ABCD.

ABCD is a parallelogram whose diagonals AC and BD intersect at O. A line through O
intersects AB at P and DC at Q. Prove that ar (Δ POA) = ar (Δ QOC).

ABCD is a parallelogram. E is a point on BA such that BE = 2 EA and F is a point on DC
such that DF = 2 FC. Prove that AE CF is a parallelogram whose area is one third of the
area of parallelogram ABCD.

In below fig., PSDA is a parallelogram in which PQ = QR = RS and AP || BQ || CR. Prove
that ar (Δ PQE) = ar (ΔCFD).

A triangle and a parallelogram are on the same base and between the same parallels. The ratio of the areas of triangle and parallelogram is

ABCD is a parallelogram. P is any point on CD. If ar (ΔDPA) = 15 cm2 and ar (ΔAPC) = 20 cm², then ar (ΔAPB) =

The area of the figure formed by joining the mid-points of the adjacent sides of a rhombus with diagonals 16 cm and 12 cm is

ABCD is a trapezium in which AB || DC. If ar (ΔABD) = 24 cm² and AB = 8 cm, then height of ΔABC is

The medians of a triangle ABC intersect each other at point G. If one of its medians is AD,
prove that:
(i) Area ( ΔABD ) = 3 x Area ( ΔBGD )
(ii) Area ( ΔACD ) = 3 x Area ( ΔCGD )
(iii) Area ( ΔBGC ) = `1/3` x Area ( ΔABC ).

The length and breadth of a rectangular piece of land are in the ratio 5 : 3. If the total cost of fencing it at the rate of ₹24 per meter is ₹9600, find its :
(i) length and breadth
(ii) area
(iii) cost of levelling at the rate of ₹60 per m².

Find the area of a rectangle whose length = 15 cm breadth = 6.4 cm

Find the area of a rectangle whose length = 3.6 m breadth = 90 cm

Each side of a square is 7 m. If its each side be increased by 3 m, what will be the increase in its area.

Length of a rectangle is 30 m and its breadth is 20 m. Find the increase in its area if its length is increased by 10 m and its breadth is doubled.

Is the area of the blue shape more than the area of the yellow shape? Why?

Measure the length of the floor of your classroom in meters. Also, measure the width.

What is the area of the floor of your classroom in square metres?

Nasreena is a farmer who wants to divide her land equally among her three children — Chumki, Jhumri, and Imran. She wants to divide the land so that each piece of land has one tree. Her land looks like this.

Can you divide the land equally? Show how you will divide it. Remember each person has to get a tree. Colour each person’s piece of land differently.

Look at the table. If you were to write the area of each of these which column would you choose? Make a (✓).

	Square cm	Square meter	Square km
Handkerchief	✓
Sari
Page of your book
School land
Total land of a city
Door of your classroom
Chair seat
Blackboard
Indian flag
Land over which a river flows

Each line gives a story. You have to choose the question which makes the best story problem. The first one is already marked.

352 children from a school went on a camping trip. Each tent had a group of 4 children.

a) How many children did each tent have?

b) How many tents do they need?

c) How many children in all are in the school?

Each line gives a story. You have to choose the question which makes the best story problem. The first one is already marked.

A shopkeeper has 204 eggs. He puts them in egg trays. Each tray has 12 eggs.

a) How many more eggs will he need?

b) How many fresh eggs does he sell?

c) How many egg trays does he need?