Question

the lid of a rectangular box of sides 40 cm by 10 cm is sealed all around with tape. what is the lenght of the tape required?

Answer 1

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➥QUESTION

The lid of a rectangular box of sides 40 cm by 10 cm is sealed all around with tape. what is the lenght of the tape required?

➥TO FIND

We've to find length of the tape required to seal rectangular box.

➥GIVEN

Side of rectangular box = perimeter of rectangle,

40 cm = Length

10 cm = Breadth

➥SOLUTION

Length of required tape = Perimeter of rectangle

= 2 (Length + Breadth)

= 2 (40 + 10)

= 2 (50)

= 100 cm

⇨Required length of tape is 100 cm

ANSWER: ❝Required length of tape is 100 cm❞

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➥QUESTION

A table top measures 2 m 25 cm by 1 m 50 cm. What is the perimeter of the table top?

➥TO FIND

We've to find perimeter of table top.

➥GIVEN

Length of table top = 2 m 25 cm = 2.25 m

Breadth of table top = 1 m 50 cm = 1.50 m

➥SOLUTION

Length of table top = 2 m 25 cm = 2.25 m

Breadth of table top = 1 m 50 cm = 1.50 m

Perimeter of table top = 2 (Length + Breadth)

= 2 (2.25 + 1.50)

= 2 (3.75)

= 2 × 3.75

= 7.5 m

⇨The perimeter of the table top is 7.5 m

ANSWER: ❝The perimeter of the table top is 7.5 m❞

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➥QUESTION

What is the length of the wooden strip required to frame a photograph of length and breadth 32 cm and 21 cm respectively?

➥TO FIND

We've to find Length of wooden strips requiring for the frame.

➥GIVEN

Its given that length is 32 cm and Breath is 21 cm

➥SOLUTION

Solutions:

Required length of wooden strip = Perimeter of photograph

= 2 (Length + Breadth)

= 2 (32 + 21)

= 2 (53)

= 2 × 53

= 106 cm

⇨Required length of the wooden strip is 106 cm

ANSWER: ❝Required length of the wooden strip is 106 cm❞

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➥QUESTION

A rectangular piece of land measures 0.7 km by 0.5 km. Each side is to be fenced with 4 rows of wires. What is the length of the wire needed?

➥TO FIND

We've to find Length of wire needed.

➥GIVEN

it's given that land measures 0.7 km by 0.5 km.

➥SOLUTION

Solutions:

Perimeter of the field = 2 (Length + Breadth)

= 2 (0.7 + 0.5)

= 2 (1.2)

= 2 × 1.2

= 2.4 km

Each side is to be fenced with 4 rows = 4 × 2.4

= 9.6 km

⇨Total length of the required wire is 9.6 km

ANSWER: ❝Total length of the required wire is 9.6 km❞

Answer 2

Question :-

• The lid of a rectangular box of sides 40 cm by 10 cm is sealed all around with tape. what is the lenght of thetape required?

Given :-

• Length = 40cm

• Width = 10cm

To find :-

• Length of the tape required

Solution :-

$\large\overline{\underline{ \boxed{ \sf \red{\bigstar Formula \: used}}}} </p><p></p><p>$

$\large \boxed { \bf \: Perimeter = 2(Length + Width }$

$\\ \\ \implies \bf \large2( 40+ 10) = 2 \times 50 = 100$

So the length of the tape required = 100cm