Answer:
76.5 cm²
Step-by-step explanation:
Given the triangles are similar , then
ratio of sides = a : b , so
ratio of areas = a² : b²
Here ratio of sides = 9 : 13.5 = 2 : 3
ratio of areas = 2² : 3² = 4 : 9
let x be the area of Δ DEF and using proportion
=
( cross- multiply )
4x = 306 ( divide both sides by 4 )
x = 76.5
The area of Δ DEF = 76.5 cm²
Answer:
16
Step-by-step explanation:
solution,
2a-4b
2*2-4*-3
4-(-12)
4+12
16
SA= ( BH + 2LS +LB)
B= 16
H=6
L=8
S=10
SA= ( 16*6 +2(8*10) +8*16)=
SA= (96+2(80)+128)=
SA= (96+160+128)=
SA= 384
Answer:
Distributive Property: a(b+c) = ab+ac

<em><u>(3y+30)</u></em> is the right answer.
Your answer is D ................