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 thetriangle.A.137cmB.135c...

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

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

PT

Phạm Thanh Huyền

8 tháng 3 2017 - olm

three lines dissect a big triangle into four triangles and three quadrilaterals. the sum of the perimeters of the three quadrilateral is 25 cm, the sum of the perimeters of the four triangle is 20 cm. the perimeter of the big triangle is 19 cm. how big is the sum of the lengths of the three dissecting lines?

#Toán lớp 7

0

NR

No ri do

20 tháng 12 2016

Toán tiếng anh: If the length of a leg of a right angle is 11 and the lengths of the other two side are both positive integers, then the perimeter of a triangle is.............

#Toán lớp 8

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

Đúng(0)

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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MM

Make My Dream Come True

1 tháng 3 2018 - olm

1.Find the greatest negative integer value for n so that:

n⁴- 25n² - 70n - 49

2.Toán tiếng anh: If the length of a leg of a right angle is 11 and the lengths of the other two side are both positive integers, then the perimeter of a triangle is.............

#Toán lớp 8

0

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

PN

Pham Ngoc My

2 tháng 2 2017

12 nha ban

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MD

MANG ĐỨC DŨNG

11 tháng 2 2017

12 nha

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LT

Lê Thu Trang

10 tháng 6 2018 - olm

Given a square with the length of one side is 8 cm and a isosceles triangle with the length of its base is 12 cm. If the area of the square is equal to the area of the isosceles triangle then what is the length of the height of the isosceles triangle, in cm?

#Toán lớp 8

1

NN

Nguyễn Ngọc Hà Linh

12 tháng 10 2018

32/3 nha ban

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