For problem number 4!!

Step-by-step explanation:

we have to find the base area of a cone whose curved surface =25 m

height of cone=20 m

radius of base=√(25²-20²)=√(625-400)=√(225)=15 m

so base area=πr²=π×15²=225π≈706.86 m²

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or