Question 11 Mark
The region enclosed between two concentric circles of different radii is called a __________ .
Answer
View full question & answer→ring
Questions
Fill in the blanks.
🎯
Test yourself on this topic
13 questions · timed · auto-graded
Question 21 Mark
Area of a rhombus is equal to __________ .
Answer
View full question & answer→$\frac{1}{2} \times$ (product of diagonals)
Question 31 Mark
The area of a parallelogram is equal to the product of the length of the side and the __________ height.
Answer
View full question & answer→corresponding
Question 41 Mark
The area of a triangle having sides of lengths a units, b units and c units respectively and semiperimeter s units is __________ sq. units.
Answer
View full question & answer→$\sqrt{s(s-a)(s-b)(s-c)}$
Question 51 Mark
The area of a $\triangle ABC$ having $BE \perp AC$, is given by __________ .
Answer
View full question & answer→$\frac{1}{2} \times AC \times BE$
Question 61 Mark
In a triangle having sides of lengths a units, b units and c units respectively, if $s=\frac{a+b+c}{2}$ units, then s is called the __________ of the triangle.
Answer
View full question & answer→semi perimeter
Question 71 Mark
A unit square grid sheet is a sheet containing horizontal and vertical lines forming squares, each of dimensions __________ .
Answer
View full question & answer→1 cm x 1 cm
Question 81 Mark
An area of 1 hectare is equal to __________ $m ^2$.
Answer
View full question & answer→10000
Question 91 Mark
Area of a right triangle is equal to __________ .
Answer
View full question & answer→$\frac{1}{2} \times$ (product of diagonals)
Question 101 Mark
The area of a simple closed figure is the measure of the __________ enclosed by it.
Answer
View full question & answer→surface
Question 111 Mark
Pie (π) is the ratio of the circumference of any circle to its __________ .
Answer
View full question & answer→diameter
Question 121 Mark
The __________ of a circle is called its circumference.
Answer
View full question & answer→perimeter
Question 131 Mark
The perimeter of a simple closed figure is the length of its __________ .
Answer
View full question & answer→boundary