13.6k views
1 vote
Can anybody help me find out how to get the other marks on this question please?

Can anybody help me find out how to get the other marks on this question please?-example-1
User Tzlil
by
7.3k points

2 Answers

1 vote

Answer:

P = 40cm => l = 40 : 4 = 10cm

A(red) = 10*3/2 = 15 cm²

A(blue) = 10*6/2 = 30 cm²

A(grey) = A - (Ar + Ab) = 10*10 - (15+30) = 100 - 45 = 55cm²

(A)100cm² ..............100%

(Ag)55cm²..................x%

Ag = 55*100/100 = 55%

User Laurent Dhont
by
8.8k points
5 votes

Answer:

the percentage is 55/100*100=55%

Explanation:

the segment of the square is 40/4=10 cm

so the area of the square is 10^2=100cm^2

the shaded area = the area of the square - the sum of the areas of the triangles inside the square

100- (10*6/2+10*3/2)=100-(30+15)=55 cm^2

User Secespitus
by
8.2k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories