6x+21+15-2x
4x+36
hope this helps...
60 - 45 = 15
so 15/45 = p/100
answer is A.
There are 6 (five sixteenths) in 1 and (seven eighths)
⇒ s = a+b+c2=5+12+132 a + b + c 2 = 5 + 12 + 13 2 = 15 cm.
Area of the base = √s(s−a)(s−b)(s−c)
= √15×10×3×2 15 × 10 × 3 × 2 cm2 = 30 cm2
