Explanation

Formula:

Area= 1/2 x Base x Height

= 1/2x19x7

= 133/2 

= 66.5 m²

Explanation

New Radius = 10 + 1% of 10 = 10 + 0.1 = 10.1

Old Area = pi _ 10 _ 10 = 100 pi

New Area = pi _ 10.1 _ 10.1 = 102.01 pi

Increase = 102.01 pi - 100 pi = 2.01 pi

Percentage Increase = (Increase / Old Area) _ 100

= (2.01 pi / 100 pi) _ 100

= 2.01%

Last verified on 20-10-2026

Explanation

Diameter = 70 cm

Circumference = pi _ D = 22/7 _ 70 = 220 cm = 2.2 meter

Speed = 66 km/hour = 66000 meter / 60 minute = 1100 meter/minute

Revolutions per minute = Distance covered in 1 minute / Circumference

= 1100 / 2.2

= 500

Last verified on 20-10-2026

Explanation

Start: Upper-Right

1.  Rotate 90° anticlockwise: Upper-Right → Upper-Left

2.  Reflect across vertical centre-line: Upper-Left → Upper-Right (mirror image)

3.  Rotate 180°: Upper-Right → Lower-Left

Last verified on 20-10-2026

Explanation

Facing North.

Start: North = 0°

90° right: North → East

135° left: East → North-West* [90° back to North + 45° more]

45° right: North-West → North

Last verified on 20-10-2026