Lakhmir Singh & Manjit Kaur Solutions for Chapter: Physical Quantities and Measurement, Exercise 4: EXERCISES

A stone of mass $30 \mathrm{grams}$ is placed in a measuring cylinder containing some water. The reading of the water level increases from $50 \mathrm{cm}³$ to $\text{60 cm³}$. What is the density of the stone?

A block is $30 \mathrm{centimeters}$ on each side, and so has a volume of $27,000 \mathrm{cm}³$. It is made of granite, which has a typical density of $2.8 \mathrm{g}/\mathrm{cm}³$. What is the mass of the block?

Rohan has to build a box for his scouting project with a volume of $36 \mathrm{cubic} \mathrm{centimeters}$. The base of the box is $6 \mathrm{cm}$ long and $2 \mathrm{cm}$ wide. How high should he build the box?

A solid cylinder has a radius of $2 \mathrm{cm}$ and a length of $7 \mathrm{cm}$. It has a density of $3.1 \mathrm{g}/\mathrm{cm}³$. What is the mass of the cylinder?

The sea turtle's habitat at the zoo is made by connecting two large aquariums. The first aquarium is $6 \mathrm{m}$ long, $4 \mathrm{m}$ wide, and $2 \mathrm{m}$ high. The second aquarium is $8 \mathrm{m}$ long, $9 \mathrm{m}$ wide, and $3 \mathrm{m}$ high. How many cubic meters of space do the sea turtles have in their habitat?

An experiment is conducted to measure the density of an object of unknown material as shown.

The mass of an object is measured using a weighing machine and it turns out to be$100 \mathrm{g}$. Calculate the density of the object (in $\mathrm{g}/\mathrm{cm}³$).

What is the volume of the following?

Find the area of the figures given below.