Hey There! I can help you by explaining how to solve it but not answering sorry! Anyhow, To find the volume of a square based pyramid I suggest you start with the square and do L x W. Than Solve the triangles by using formula 0.5 * b * h. Hint: On the bottom triangle use 8cm from the square with the 3.8cm. Hope you now understand and can find the answer!
Answer: 92%
Explanation: 23/25 is same as 92/100, so we can easily know that it's 92% :D
J=14, k=j+8, l=2m, m=k-7
j=14, k=(14+8), l=2(k-7), m=(14+8)-7
j=14, k=22, l=2(22-7), m=22-7
j=14, k=22, l=30, m=15
And we are told that j+k+l+m+n=100, using j,k,l, and m found above:
14+22+30+15+n=100 combining like terms on left side
81+n=100 subtract 81 from both sides
n=19
So Nicky scored 19 points.