Answer:
8.48528137424^2
Step-by-step explanation:
8.48528137424x8.48528137424
= 72
<span>number times itself equals 196
</span>

Answer:
1241
Step-by-step explanation:
∴
L.C.M. of 28, 36 and 45 = 2 × 2 × 3 × 3 × 5 × 7 = 1260
∴
the required number is 1260 - 19 = 1241
Hence, if we add 19 to 1241 we will get 1260 which is exactly divisible by 28, 36 and 45.