Surface area I think is the circle. So the formula to find the area of the circle is to do Pi times radius squared. Pi= 3.14 Radius in this case will be 2.2. (Radius is how much it measures out from the middle.) then you want to do 2.2 x 2.2 (since it's square) So the answer would be equal to (I think) 15.1976
X - the number of pencils
y - the number of pens
She has twice as many pencils as she has pens.
Tom borrows a pen, so she has y-1 pens. Now she has ten less pens than pencils.
Set 2y and y+9 equal to each other:
She has 9 pens.
The perimeter is 500 cm, meaning the width + width + length + length is 500 cm in this rectangle.
clearly, since their sum is 500 total, the length of any of the sides cannot be larger than 500, it has to be less to allow room for the other 3 sides. L < 500.
and the length cannot be 0 either, because if it's, then there's no rectangle :). L > 0
L < 500 and L > 0 0 < L < 500.
Answer:
5.25
Step-by-step explanation:
4.20 ÷ 12 = 0.35
0.35 x 15 = 5.25
Answer:
(25x * 4y * 2z) + (15x * 2y^3)
10xy(20z + 3y^2)
(if you want working, just comment [too much effort lol])