Answer:
a
Step-by-step explanation:
Answer:
Ankita is 135cm tall and Nita is 150cm tall- to find what percent of Nita's height Ankita represents you would divide ankita's height by Nita's height then multiply the answer by 100%
135cm/150cm = 0.9 (the centimetres cancel out and leaves a generic unit) then 0.9 x 100% = 90%
so Ankita is 90% of the height of Nita
Step-by-step explanation:
Let's be a and b the sides of the rectangle.
1 Area is 1600 =a*b
2. Perimeter is 2(a+b)=160 ==>b=80-a
So,
1600=a*b=a*(80-a)==>80a-a²=1600
==> a²-80a+1600=0
==> (a-40)²=0
==>a=40 or a=-40 (to exclude since <0)
==>b=1600/40=40
The rectangle is a square of 40m of side.