Three sides of a triangle are: 7,5 dm

TL

Thiên Long

2 tháng 4 2015 - olm

Three sides of a triangle are: 7,5 dm; 6,25 dm; and 8,35 dm. Its perimeter is...dm?

#Toán lớp 5

1

NT

Nguyễn Tài Minh Huy

2 tháng 4 2015

Its perimeter is 7,5 + 6,25 + 8,35 = 22,1 (dm)

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KA

KHÚC ÁI DUYÊN

22 tháng 6 2021 - olm

The lengths in cm of three sides of a triangle are three consecutive odd numbers.
Knowing that the perimeter of the triangle is 40.5 dm, find the length of the longest side of the
triangle.
A.137cm
B.135cm
C.143cm
D.145cm

#Toán lớp 6

1

HA

»» Hüỳñh Äñh Phươñg ( ɻɛɑm ʙáo cáo....

22 tháng 6 2021

40.5dm = 405cm

The length of each side averages to : 405 / 3 = 135 ( cm )

The length of the longest side of the triangle is : 135 + 2 = 137 ( cm )

The answer is A.137cm.

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PN

Pham Nguyen Linh Dan

2 tháng 3 2022

The lengths in cm of three sides of a triangle are three consecutive odd numbers. Knowing that the perimeter of the triangle is 39cm, find the length of the longest side of the triangle. Show your work.

#Toán lớp 5

0

꧁༺๖ۣۜ🅰๖ۣۜ🅳๖ۣۜ🅼๖ۣۜ🅸๖ۣۜ🅽๖ۣۜ🅱๖ۣۜ🅸๖ۣۜ🆁๖...

13 tháng 12 2019 - olm

The length of three sides of a triangle is proportional to 2; 3; 4.Three heights corresponding to those 3 sides are proportional to which 3 numbers?

#Toán lớp 7

0

DP

Dung Phạm

12 tháng 12 2017

A square and a triangle have equal perimeters. The lengths of three sides of the triangle are 6.2cm, 8.3cm and 9.5cm. The area of the square is...

#Toán lớp 8

3

HV

Hoàng Vũ Ánh Dương

16 tháng 12 2017

36

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ST

Song Thư

16 tháng 12 2017

Perimeters of a triangle is: 6.2+8.3+9.5=24cm

But a square and a triangle have equal perimeters

⇒Perimeters of a square is 24cm

So: the side of a square=\(\dfrac{24}{4}\)=6

Other way: the area of a square=a.a

⇔S_square=6*6=36 (cm²)

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PG

Phong Gió

13 tháng 2 2020 - olm

The lengths of three sides of a triangle are all primes, and the perimeter of the triangle is 17. Find the sum of all possible value(s) of the second longest side.

#Toán lớp 8

0

NM

Nhật Minh

15 tháng 2 2020 - olm

The lengths of three sides of a triangle are all primes, and the perimeter of the triangle is 4343. Find the sum of all possible value(s) of the longest side.

#Toán lớp 8

0

PG

Phong Gió

15 tháng 2 2020 - olm

Point B,DB,D and JJ are midpoints of the sides of right triangle ACGACG . Points K,E,IK,E,I are midpoints of the sides of triangle JDGJDG, etc. If the dividing and shading process is done 100 times (the first three are shown) and AC=CG=6AC=CG=6, then the total area of the shaded triangles is nearest

#Toán lớp 8

1

CM

Chu Mi Mi

15 tháng 2 2020

Giải toán trên mạng - Giúp tôi giải toán - Hỏi đáp ... - Online Math

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Q

qwertyuiop

18 tháng 12 2016 - olm

The sides of a triangle are a, b and c respectively. What is the perimeter of the triangle if a = 5cm, b = 4cm, and c = 3cm? Answer: The perimeter of the triangle is cm.

#Toán lớp 9

2