Mensuration

Question 1

Radian is equal to?

Answer 1

Degrees × (π/180)

Question 2

Area of sector of circle

Answer 2

(radius * length of arc )/ 2

θ/360° ×2πr

Question 3

Area of an equilateral triangle?

Answer 3

√3/4 * a²

Question 4

If all the sides of a parallelogram is equal that mean its

Answer 4

Rhombus

Question 5

Arra of rhombus

Answer 5

1/2 * d₁*d₂

Question 6

Diagonals of a rhombus

Answer 6

are perpendicular bisectors of each other

Question 7

ABC is a triangle right angled at B. Then what is the length of the perpendicular drawn from the vertex B to the hypotenuse?

Answer 7

BD = (AB*AC)/ BC

Question 8

Area of right angled triangle is maximum when

Answer 8

base and height are equal

Question 9

The perimeter of a triangle is greater than the sum of its three

Answer 9

medians

Question 10

In any triangle ABC, if D is any point on BC, then

Answer 10

AB + BC + CA > 2 AD.

Question 12

In a triangle with sides abc, ration of heights is given by

Answer 12

h1:h2:h3 = 1/a : 1/b : 1/c

Question 13

Voulume of frustrum

Answer 13

1/3 * πh(r₁²+ r₂²+ r₁r₂)

Question 14

Siagonal of a cube is?

Answer 14

√3 * side