Question

how to evaluate √63×√7 in easy method​

Answer 1

Answer:

√63 × √7

√63 = √9×7

√63 = 3√7

3√7 × √7

3(7)

21.

Hope it helps you.

Answer 2

$first \: find \: \sqrt{63}$

$refer \: to \: first \: attachment$

$then \: find \: \sqrt{7}$

$refer \: to \: second \: attachment$

$so \: 7.937 \times 2.645$

$= 20.993365$

$or \:21$