Dr. K.Prabhakara Reddy, Shobana Ramkumar, Dr. Gayatri Ramachandran and, G. Devika Solutions for Chapter: Measurement, Exercise 1: Evaluation

Find the area of the cardboard piece?

A square piece of paper has a side of $5 \mathrm{cm}$. Find its area in (a) ${\mathrm{cm}}^2$, (b) ${\mathrm{m}}^2$, (c) ${\mathrm{mm}}^2$.

A triangle has a base of $8 \mathrm{cm}$ and a height of $4 \mathrm{cm}$. Find its area.

A book is $25 \mathrm{cm}$ long, $15 \mathrm{cm}$ wide and $2 \mathrm{cm}$ high. What is the volume of the book?

A cylindrical vessel is $15 \mathrm{cm}$ long, and its diameter is  $7 \mathrm{cm}$. What volume of water can be poured into it without spilling?

A piece of lead weighs $232 \mathrm{g}$ and has a volume of $20 {\mathrm{cm}}^3$. Find the density of lead.

A density bottle weighs $20.25 \mathrm{g}$ when empty, $40.75 \mathrm{g}$ when filled with a liquid and $50.25 \mathrm{g}$ when filled with water. Find volume of bottle.

A density bottle weighs $20.25 \mathrm{g}$ when empty, $40.75 \mathrm{g}$ when filled with a liquid and $50.25 \mathrm{g}$ when filled with water. Find density of the liquid.