RBSE Guide

What do you think is the area of an A4 sheet? Its sidelengths are 21 cm and 29.7 cm. Now find its area. Class 8

easy
Maths Class 8 Maths 104 views Jun 17, 2026 Reviewed & updated Sep 17, 2026
R
RBSEGuide Expert Answer

What do you think is the area of an A4 sheet? Its sidelengths are 21 cm and 29.7 cm. Now find its area. Class 8

Question 1.

What do you think is the area of an A4 sheet?

Its sidelengths are 21 cm and 29.7 cm. Now find its area. Class 8

Solution:

Area = 21 × 29.7 sq. cm.

= 623.7 sq. cm.


Question 2.

Express the following lengths in centimeters : Class 8

(i) 5 in

(ii) 7.4 in.

Solution:

(i) 5 in = 5 × 2.5 cm = 12.5 cm

(ii) 7.4 in = 7.4 × 2.5 = 18.5 cm


More from Class 8 Maths

View all →
What is 2^100 ÷ 2^25 in powers of 2? In a generalised form, n^a ÷ n^b = n^a – b Class 8
Class 8 Maths 201 views
Find the squares of the first 30 natural numbers and fill in the table below. Class 8
Class 8 Maths 200 views
What patterns do you notice? Share your observations and make conjectures. Class 8
Class 8 Maths 175 views
The next two taxicab numbers after 1729 are 4104 and 13832. Find the two ways in which Class 8
Class 8 Maths 173 views
You are told that 1331 is a perfect cube. Can you guess without factorisation what its cube root...
Class 8 Maths 161 views

Related Questions

Figure out the number of whole units in each of the following fractions (Page 162)
Maths 417 views
Lines and Angles Class 6 MCQ
Maths 358 views
The Ashoka Chakra has 24 spokes. What is the degree measure of the angle between two spokes next...
Maths 310 views
Prime Time Class 6 Fill in the blanks, True or False, Matching
Maths 301 views
But how much is one lakh? Observe the pattern and fill in the boxes given below. Class 7
Maths 297 views
Think about various situations where we use numbers. List five different situations in which...
Maths 294 views
Patterns in Mathematics Class 6 Assertion Reasoning Questions
Maths 288 views
In the given figure, measure ∠ABC, ∠BDA, ∠BAD, ∠CAD, ∠DCA, and ∠ADC using a protractor.
Maths 276 views
Represent the triangular number 45 pictorially using dots. Represent the cube number 216 pictorially.
Maths 274 views
Use the given figure to write four rays, two acute angles, and two right angles.
Maths 258 views