Cubes

Level: STD 09

Problem 1

Find the LSA, TSA and volume of a cube of side 5 cm.


Problem 2

Given

TSA = 216 sq. cm

a = ?

Formula

TSA = 6a2

6 x a2 = 216

a2= 216/6 = 36

Therefore, a = 6 cm


Problem 3


Problem 4


Problem 5

Given

Tank volume

a = 2 m

V1 = 2 x 2 x 2 = 8 m3

Measured volume

h = 10 cm = 0.1 m

V2 = a2 x h = 2 x 2 x 0.1 = 0.4 m

Rate per measure of 0.4 m3 volume = Rs. 50

Cost for 8 m3 volume of oil = 8 x 50 /0.4 = Rs. 1000


Problem 6


Problems for practice