Answer:
b)480 cm^2
Step-by-step explanation:
perimeter=(16+12+20) cm
=48 cm
lateral surface area= perimeter × height
=48×10 =480 cm^2
To simplify square root 27, find two numbers that equal 27. But also, one of the numbers should be a perfect square (such as 4, 9, 36...).
9*3=27. The square root of 9 is 3, which makes it a perfect square. So, the answer is A.
I know this is late and you probably got the answer but just in case its C. 5. :P
<span>x^2+5x+6=0
(x+3)(x+2) = 0
x+3 = 0
x = -3
</span>x+2 = 0
x = -2
<span>
Solutions: x = -3 and x = -2
</span>
