Answering your question on "9 students can make a poster in 10 hours. How many students should join them so that they all together can make this poster in 6 hours" its 13 students
Correct answer would be C
24x
100 + 8x
If you plug in 6.25 for X in both equations, they both equal 150 so in 6.25 hours they will have the same amount.
Answer: a/2 a/2
Step-by-step explanation:
same answer for both
Answer:
let the
radius = diameter/2= 32/2= 16cm
now
perimeter of semi circle = <em><u>1</u></em><em><u>/</u></em><em><u>2</u></em><em><u>×</u></em><em><u>22</u></em><em><u>/</u></em><em><u>7</u></em><em><u>×</u></em><em><u>r</u></em>
= 1/2×22/7×16
= 25.14cm
hence perimeter of semi circle is 25 .14cm
