Answer:
Base = 126 cm or 60 cm
Step-by-step explanation:
Ratio of sides of isosceles triangle = 4 : 7
Sides are = 4x , 7x
If smallest sides of the isosceles triangle are equal, then
three sides are = 4x , 4x , 7x
Perimeter = 270 cm
4x + 4x + 7x = 270
15x = 270
x = 270/15
x = 18
Base = 7x = 7*18 = 126 cm
If largest sides of the isosceles triangle are equal, then
Three sides are = 7x , 7x , 4x
7x + 7x +4x = 270
18x = 270
x = 270/18
x = 15
Base = 4x = 4 * 15 = 60 cm
Answer:
square
triangle
5
square pyramid
find area of base and area of a lateral face (base is 1 side squared, lateral face is base * height / 2. Multiply area of lateral face by 4 and add the product to the area of the base to find the Surface Area.
Step-by-step explanation:
The constant proportionality is whats left over
Answer:
11
Step-by-step explanation:
540/x=100/18
<span>(540/x)*x=(100/18)*x - </span>we multiply both sides of the equation by x
<span>540=5.5555555555556*x - </span>we divide both sides of the equation by (5.5555555555556) to get x
<span>540/5.5555555555556=x </span>
<span>97.2=x </span>
x=97.2
<span>now we have: </span>
<span>18% of 540=97.2</span>