The Pythagorean Theorem is a^2 +b^2 = c^2, where a and b are the sides and c is the hypotenuse ( angled line).
3.
a^2 + 6^2 = 18^2
a^2 + 36 = 324
a^2 = 324 - 36
a^2 = 288
a =√288
a = 12√2
4.
a^2 + 3^2 = 9^2
a^2 + 9 = 81
a^2 = 81-9
a^2 = 72
a = √72
a = 6√2
Peter found the correct expression, the width and length of the base are 5 and 14 centimeters.
Thelma found the measurements for the surface on the side of the rectangular pyramid, not the base.
Answer:
6y+4x+5=0
Step-by-step explanation:
y=-(2/3)-(5/6)
y+2/3=-5/6
y+2/3+5/6= 0
y+4/6+5/6=0
6y+4+5=0
Answer:
122.5 cm²
Step-by-step explanation:
the area of shaded region =
(14×10) - (7 × 2.5)
= 140 - 17.5
= 122.5 cm²
Answer:
B = 41
Step-by-step explanation:
19 --8 --14 (the minus minus turn into pluses)
19+8+14
27+14 = 41