A day full of math games & activities. Find one near you.

A day full of math games & activities. Find one near you.

A day full of math games & activities. Find one near you.

A day full of math games & activities. Find one near you.

# ∆ABC is isosceles with AB = AC = 7.5 cm and BC = 9 cm (Fig 11.26). The height AD from A to BC, is 6 cm. Find the area of ∆ABC. What will be the height from C to AB i.e., CE?

**Solution:**

In triangle ABC, AD = 6 cm and BC = 9 cm

Area of triangle ABC = 1/2 × Base × Height

= 1/2 × BC × AD

= 1/2 × 9 cm × 6 cm

= 27 cm^{2}

Now, Area of triangle ABC = 1/2 × AB × CE

27 cm^{2 }= 1/2 × 7.5 cm × CE

CE = (2 × 27 cm^{2}) / 7.5 cm

CE = 54 cm^{2} / 7.5 cm

CE = 7.2 cm

**☛ Check: **NCERT Solutions for Class 7 Maths Chapter 11

**Video Solution:**

## ∆ABC is isosceles with AB = AC = 7.5 cm and BC = 9 cm (Fig 11.26). The height AD from A to BC, is 6 cm. Find the area of ∆ABC. What will be the height from C to AB i.e., CE?

Class 7 Maths NCERT Solutions Chapter 11 Exercise 11.2 Question 8

**Summary:**

∆ABC is isosceles with AB = AC = 7.5 cm and BC = 9 cm. The height AD from A to BC, is 6 cm. 27 cm^{2} is the area of ∆ABC and 7.2 cm will be the height from C to AB.

**☛ Related Questions:**

- Find The Missing Values Base Height
- Pqrs Is A Parallelogram Fig 1123 Qm Is The Height From Q To Sr And Qn Is The Height From Q To Ps If Sr 12 Cm And Qm 76 Cm Find A The Area Of The Parallelogram Pqrs
- Dl And Bm Are The Heights On Sides Ab And Ad Respectively Of Parallelogram Abcd Fig 1124 If The Area Of The Parallelogram Is 1470 Cm2 Ab 35 Cm And Ad 49 Cm Find The Length
- Abc Is Right Angled At A Fig 11 25 Ad Is Perpendicular To Bc If Ab 5 Cm Bc 13 Cm And Ac 12 Cm Find The Area Of Abc Also Find The Length Of Ad

Math worksheets and

visual curriculum

visual curriculum