The angle of a sector in a given circle is 40 degree and the area of the sector is equal to 20cm2 . Calculate the arc length of the sector. A 6.5 cm B 7.4 cm C 5.3 cm D None of these

What are the differences between similar triangles and congruent triangles?

What are Armstrong numbers?

All real numbers are rational numbers.

A) True

B) False

The L.C.M of the smallest 2 digit composite number and the smallest composite number is:

• (a) 12
• (b) 4
• (c) 20
• (d) 44

Are all natural numbers also whole numbers?