Q2 of 67 Page 93

Simplify:

√169 × √361

√169 × √361


√169 = 13


√361 = 19


⇒ √163 × √361 = 13 × 19


= 247


∴ √169 × √361 = 247


More from this chapter

All 67 →
2

Simplify:

√225 – √25

 2

Simplify:

√1764 – √1444

 3

A square yard has area 1764 m2. From a corner of this yard, another square part of area 784 m2 is taken out for public utility. The remaining portion is divided in to 5 equal square parts. What is the perimeter of each of these equal parts?

 4

Find the smallest positive integer with which one has to multiply each of the following numbers to get a perfect square:

(i) 847


(ii) 450


(iii) 1445


(iv) 1352