Answer: first option 392.699 square feet.
Explanation:
1) The shape of the sidewalk is an ring with exterior radius equal to the radious of the fountain + 5 feet and inner radius equal to the radius of the fountain.
2) The area of such ring is equal to the area of the outer circle less the area of the inner circle (the fountain)
Area of a circle = π × r²
Area of the outer circle: π (10ft + 5 ft)² = π (15 ft)² = 225 π ft²
Area of the inner circle = π (10ft)² = 100 π ft²
Area of the ring (sidewald) = 225π ft² - 100π ft² = 125π ft² = 392.699 ft²
Answer:
64
Step-by-step explanation:
Youd do 8x8 because the base of the triangles are 8 and a square has equal sides all around
Answer:Yes
Step-by-step explanation:
Because if the parallelogram has an right angle , the opposite angle will also be an right angle.So, in conclusion parallelogram ABCD is a rectangle.
Answer:
i think it is b correct me if i am rong
Step-by-step explanation:
Yes this is you can tell because the d is not squared or anything it’s just basic
