Geometry Formulas | MCQs

Explanation

The basic formula to find the area of a triangle is, area of triangle = 1/2 (b × h);

where 'b' is the base

and 'h' is the height of the triangle

Explanation

In geometry, the area enclosed by a circle of radius r is πr2

Arear of the circle: πR2

The perimeter of the circle: C = 2πR

Symmetry group: O(2)‎

Explanation

perimeter of square=4×side

=4×2.5

=10cm

SH5-9-2023

Explanation

Explanation

Explanation

17m

Area of the rectangular carper =120 cm2
Perimeter =46 m
2(l+b)=46
(l+b)=46/2

l+b=23

And, length × breadth=120

Now, we know that :

(l−b)2=(l+b)2−4lb
(l−b)2=(23)2−4×120
(l−b)2=529−480
(l−b)2=49

(l−b)2=(7)2

Hence, l−b=7

And l+b=23

By adding, we get 2

Explanation

The Greek letter $\pi$(pronounced as Pie) represents the ratio between the circumference and the diameter of a circle.

i.e. $\frac{circumferenceofthecircle}{Itsdiameter\left(d\right)}=\pi$

$=Circumferenceofthecircle=\pi \times d$

$=2.\pi .r$

Explanation

Explanation:

Let the given points be A(5,-7) and B(9,8)


A(5,-7) and B(9, 8)

Here,

X1 = 5 , Y1 = -7 and X2 = 9, Y2 = 8


By using the distance formula, we have

AB² = (X2-X1)² + (Y2-Y1)²

AB² = (9-5)² + (8-(-7))²

AB² = (4)² + (15)²

AB² = 16+225


AB² = 241

AB = ✓241 = 15.5 units.

Hence,


Distance between the points A(5,-7) and B(9,8) is 15.5 units.

Explanation

Explanation