A photo graph 25cm by 20 cm is mounted on card os that there is margin of 2.5cm ...

Questions

September 2021 2 58 Report

A photo graph 25cm by 20 cm is mounted on card os that there is margin of 2.5cm all the way round .what fractionof card is covered?

iHelper Hello!

Dimensions of photograph $\textbf{25 \:cm \:x\: 20\: cm}$

ATQ,

The photograph is mounted on the card.
There is a margin of 2.5 cm left at each corner of the card.

• Length = 25 cm + 2.5 cm + 2.5 cm = $\boxed{\sf 30 \:cm}$

• Breadth = 20 cm + 2.5 cm + 2.5 cm = $\boxed{\sf 25 \:cm}$

• Area of the card = 30 cm × 25 cm = $\boxed{\sf 750\: cm^{2}}$

• Area of the photograph = 25 cm × 20 cm = $\boxed{\sf 500\: cm^{2}}$

Then,

Fraction of card covered = $\dfrac{\sf 500\:cm^{2}}{\sf 750\:cm^{2}} = \dfrac{\sf 2}{\sf 3}$

Cheers!

Questions

Answers & Comments

Add an Answer

how many sides has a polygon the sum of whose interior angles is 1980

Find the area of an equilateral triangle whose each sides is 12cm...

The area of rhombus is 72cmsq .If one of its doagonals is 18 cm what is length o...

The area of triangle is 1176cmsq .the ratio of base to corresponding altitude is...

The area of an isosceles triangle is 300cmsq .The height of triangle is 15cm. Fi...

hr ,find average speed...

The area of rombus is 2016cmsq and its sides are each equal to 63 cm .find its h...

Recommend Questions

Helpful Links

Helpful Social